diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export.h b/code/nel/tools/3d/plugin_max/nel_export/nel_export.h
index 4941f2596..eabc05a09 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export.h
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export.h
@@ -105,11 +105,11 @@ class CNelExportClassDesc:public ClassDesc2
 	public:
 	int 			IsPublic() {return 1;}
 	void *			Create(BOOL loading = FALSE);
-	const TCHAR *	ClassName() {return _T("NeL Export");}
+	const MCHAR *	ClassName() {return _M("NeL Export");}
 	SClass_ID		SuperClassID() {return UTILITY_CLASS_ID;}
 	Class_ID		ClassID() {return CNELEXPORT_CLASS_ID;}
-	const TCHAR* 	Category() {return _T("NeL Tools");}
-	const TCHAR*	InternalName() { return _T("NeL export and view"); }	// returns fixed parsable name (scripter-visible name)
+	const MCHAR* 	Category() {return _M("NeL Tools");}
+	const MCHAR*	InternalName() { return _M("NeL export and view"); }	// returns fixed parsable name (scripter-visible name)
 	HINSTANCE		HInstance() { return hInstance; }				// returns owning module handle
 };
 
diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp b/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp
index e1eec815f..49e0ce97e 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp
@@ -90,13 +90,13 @@ class addSubLodNodeHitCallBack : public HitByNameDlgCallback
 public:
 	INodeTab	NodeTab;
 private:
-	virtual TCHAR *dialogTitle()
+	virtual const MCHAR *dialogTitle()
 	{
-		return "Select sub lod objects to add";
+		return _M("Select sub lod objects to add");
 	}
-	virtual TCHAR *buttonText()
+	virtual const MCHAR *buttonText()
 	{
-		return "Add";
+		return _M("Add");
 	}
 	virtual BOOL singleSelect()
 	{
diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export_script.cpp b/code/nel/tools/3d/plugin_max/nel_export/nel_export_script.cpp
index 4c8ffd299..dfdbdec08 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export_script.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export_script.cpp
@@ -63,11 +63,11 @@ def_visible_primitive ( set_file_modification_date, 	"NeLSetFileModificationDate
 def_visible_primitive ( force_quit_on_msg_displayer,		"NelForceQuitOnMsgDisplayer");
 def_visible_primitive ( force_quit_right_now,		"NelForceQuitRightNow");
 
-char *sExportShapeErrorMsg = "NeLExportShape [Object] [Filename.shape]";
-char *sExportShapeExErrorMsg = "NeLExportShapeEx [Object] [Filename.shape] [bShadow] [bExportLighting] [sLightmapPath] [nLightingLimit] [fLumelSize] [nOverSampling] [bExcludeNonSelected] [bShowLumel]";
-char *sExportAnimationErrorMsg = "NelExportAnimation [node array] [Filename.anim] [bool_scene_animation]";
-char *sExportCollisionErrorMsg = "NelExportCollision [node array] [output directory]";
-char *sExportPACSPrimitivesErrorMsg = "NelExportPACSPrimitves [node array] [output filename]";
+MCHAR *sExportShapeErrorMsg = _M("NeLExportShape [Object] [Filename.shape]");
+MCHAR *sExportShapeExErrorMsg = _M("NeLExportShapeEx [Object] [Filename.shape] [bShadow] [bExportLighting] [sLightmapPath] [nLightingLimit] [fLumelSize] [nOverSampling] [bExcludeNonSelected] [bShowLumel]");
+MCHAR *sExportAnimationErrorMsg = _M("NelExportAnimation [node array] [Filename.anim] [bool_scene_animation]");
+MCHAR *sExportCollisionErrorMsg = _M("NelExportCollision [node array] [output directory]");
+MCHAR *sExportPACSPrimitivesErrorMsg = _M("NelExportPACSPrimitves [node array] [output filename]");
 
 extern CExportNelOptions theExportSceneStruct;
 
@@ -207,8 +207,8 @@ Value* export_skeleton_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check (arg_list[0], MAXNode, "NelExportSkeleton [root node] [Filename]");
-	type_check (arg_list[1], String, "NelExportSkeleton [root node] [Filename]");
+	type_check (arg_list[0], MAXNode, _M("NelExportSkeleton [root node] [Filename]"));
+	type_check (arg_list[1], String, _M("NelExportSkeleton [root node] [Filename]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -298,7 +298,7 @@ Value* export_animation_cf (Value** arg_list, int count)
 			else
 			{
 				// Error message
-				mprintf ("Error exporting animation %s in the file\n%s\n", (*vectNode.begin())->GetName(), sPath);
+				mprintf (_M("Error exporting animation %s in the file\n%s\n"), (*vectNode.begin())->GetName(), utf8ToTStr(sPath));
 			}
 		}
 	}
@@ -321,8 +321,8 @@ Value* export_ig_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check (arg_list[0], Array, "NelExportInstanceGroup [Object array] [Filename]");
-	type_check (arg_list[1], String, "NelExportInstanceGroup [Object array] [Filename]");
+	type_check (arg_list[0], Array, _M("NelExportInstanceGroup [Object array] [Filename]"));
+	type_check (arg_list[1], String, _M("NelExportInstanceGroup [Object array] [Filename]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -342,7 +342,7 @@ Value* export_ig_cf (Value** arg_list, int count)
 			// Check each value in the array
 			uint i;
 			for (i=0; i<(uint)array->size; i++)
-				type_check (array->get (i+1), MAXNode, "NelExportInstanceGroup [Object array] [Filename]");
+				type_check (array->get (i+1), MAXNode, _M("NelExportInstanceGroup [Object array] [Filename]"));
 
 			// Create a STL array
 			if (array->size)
@@ -380,8 +380,8 @@ Value* export_skeleton_weight_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check (arg_list[0], Array, "NelExportSkeletonWeight [Object array] [Filename]");
-	type_check (arg_list[1], String, "NelExportSkeletonWeight [Object array] [Filename]");
+	type_check (arg_list[0], Array, _M("NelExportSkeletonWeight [Object array] [Filename]"));
+	type_check (arg_list[1], String, _M("NelExportSkeletonWeight [Object array] [Filename]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -401,7 +401,7 @@ Value* export_skeleton_weight_cf (Value** arg_list, int count)
 			// Check each value in the array
 			uint i;
 			for (i=0; i<(uint)array->size; i++)
-				type_check (array->get (i+1), MAXNode, "NelExportSkeletonWeight [Object array] [Filename]");
+				type_check (array->get (i+1), MAXNode, _M("NelExportSkeletonWeight [Object array] [Filename]"));
 
 			// Create a STL array
 			if (array->size)
@@ -462,8 +462,8 @@ Value* test_file_date_cf (Value** arg_list, int count)
 	// Make sure we have the correct number of arguments (2)
 	check_arg_count(view_shape, 2, count);
 
-	type_check (arg_list[0], String, "NeLTestFileDate [DestFilename] [SrcFilename]");
-	type_check (arg_list[1], String, "NeLTestFileDate [DestFilename] [SrcFilename]");
+	type_check (arg_list[0], String, _M("NeLTestFileDate [DestFilename] [SrcFilename]"));
+	type_check (arg_list[1], String, _M("NeLTestFileDate [DestFilename] [SrcFilename]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -526,7 +526,7 @@ Value* export_vegetable_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	char *message = "NelExportVegetable [node] [filename] [dialog error]";
+	MCHAR *message = _M("NelExportVegetable [node] [filename] [dialog error]");
 	type_check (arg_list[0], MAXNode, message);
 	type_check (arg_list[1], String, message);
 	type_check (arg_list[2], Boolean, message);
@@ -723,7 +723,7 @@ Value* export_lod_character_cf (Value** arg_list, int count)
 	check_arg_count(export_lod_character, 3, count);
 
 	// Check to see if the arguments match up to what we expect
-	char *message = "NelExportLodCharacter [node] [filename] [dialog error]";
+	MCHAR *message = _M("NelExportLodCharacter [node] [filename] [dialog error]");
 	type_check (arg_list[0], MAXNode, message);
 	type_check (arg_list[1], String, message);
 	type_check (arg_list[2], Boolean, message);
@@ -771,7 +771,7 @@ Value* node_properties_cf (Value** arg_list, int count)
 	check_arg_count(export_lod_character, 2, count);
 
 	// Check to see if the arguments match up to what we expect
-	char *message = "NelNodeProperties [node_array] [dialog error]";
+	MCHAR *message = _M("NelNodeProperties [node_array] [dialog error]");
 
 	//type_check (arg_list[0], MAXNode, message);
 	type_check (arg_list[0], Array, message);
@@ -787,7 +787,7 @@ Value* node_properties_cf (Value** arg_list, int count)
 	uint i;
 	for (i=0; i<(uint)array->size; i++)
 	{
-		type_check (array->get (i+1), MAXNode, "NelNodeProperties [node_array] [dialog error]");
+		type_check (array->get (i+1), MAXNode, _M("NelNodeProperties [node_array] [dialog error]"));
 
 		// Add to the array of nodes
 		nodes.insert (array->get (i+1)->to_node());
@@ -830,7 +830,7 @@ Value* mirror_physique_cf (Value** arg_list, int count)
 	check_arg_count(NelMirrorPhysique , 3, count);
 	
 	// Check to see if the arguments match up to what we expect
-	char *message = "NelMirrorPhysique [node] [vert_list_in] [threshold]";
+	MCHAR *message = _M("NelMirrorPhysique [node] [vert_list_in] [threshold]");
 	
 	//type_check
 	type_check (arg_list[0], MAXNode, message);
@@ -873,7 +873,7 @@ Value* get_file_modification_date_cf (Value** arg_list, int count)
 	check_arg_count(NeLGetFileModificationDate , 1, count);
 	
 	// Check to see if the arguments match up to what we expect
-	char *message = "date NeLGetFileModificationDate [filename] - If an error occurred, returns undefined.";
+	MCHAR *message = _M("date NeLGetFileModificationDate [filename] - If an error occurred, returns undefined.");
 	
 	//type_check
 	type_check (arg_list[0], String, message);
@@ -911,7 +911,7 @@ Value* set_file_modification_date_cf (Value** arg_list, int count)
 	check_arg_count(NeLSetFileModificationDate , 2, count);
 	
 	// Check to see if the arguments match up to what we expect
-	char *message = "bool NeLSetFileModificationDate [filename] [date] - If an error occurred, returns false.";
+	MCHAR *message = _M("bool NeLSetFileModificationDate [filename] [date] - If an error occurred, returns false.");
 	
 	//type_check
 	type_check (arg_list[0], String, message);
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
index ef63a7d20..a7631c05a 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
@@ -781,8 +781,8 @@ void CExportNel::outputWarningMessage (const std::string &message)
 	{
 		MessageBox (_Ip->GetMAXHWnd(), utf8ToTStr(message), utf8ToTStr(_ErrorTitle), MB_OK|MB_ICONEXCLAMATION);
 	}
-	mprintf (message);
-	mprintf ("\n");
+	mprintf (utf8ToTStr(message));
+	mprintf (_M("\n"));
 
 	nlwarning ("Warning in max file %s : ", _Ip->GetCurFilePath());
 	nlwarning (message.c_str());
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_converter/PO2RPO.h b/code/nel/tools/3d/plugin_max/nel_patch_converter/PO2RPO.h
index 5ca665591..3d308c47c 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_converter/PO2RPO.h
+++ b/code/nel/tools/3d/plugin_max/nel_patch_converter/PO2RPO.h
@@ -50,7 +50,7 @@ class PO2RPO : public Modifier {
 		HWND hRollup;
 
 		// From Animatable
-		MCHAR *GetObjectName() { return GetString(IDS_CLASS_NAME); }
+		const MCHAR *GetObjectName() { return GetString(IDS_CLASS_NAME); }
 
 		//From Modifier
 		//TODO: Add the channels that the modifier needs to perform its modification
@@ -115,11 +115,11 @@ class PO2RPOClassDesc:public ClassDesc2 {
 		return new PO2RPO();
 	}
 
-	const TCHAR *	ClassName() {return "NeL Convert";}
+	const MCHAR *	ClassName() {return _M("NeL Convert");}
 	SClass_ID		SuperClassID() {return OSM_CLASS_ID;}
 	Class_ID		ClassID() {return PO2RPO_CLASS_ID;}
-	const TCHAR* 	Category() {return "NeL Tools";}
-	const TCHAR*	InternalName() { return _T("PatchObjectToNelPatchObject"); }	// returns fixed parsable name (scripter-visible name)
+	const MCHAR* 	Category() {return _M("NeL Tools");}
+	const MCHAR*	InternalName() { return _M("PatchObjectToNelPatchObject"); }	// returns fixed parsable name (scripter-visible name)
 	HINSTANCE		HInstance() { return hInstance; }				// returns owning module handle
 };
 
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_converter/script.cpp b/code/nel/tools/3d/plugin_max/nel_patch_converter/script.cpp
index cb667bced..7ce6c3068 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_converter/script.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_converter/script.cpp
@@ -157,7 +157,7 @@ def_visible_primitive( set_vertex_pos,			"SetRykolVertexPos");
 def_visible_primitive( get_vector_pos,			"GetRykolVectorPos");
 def_visible_primitive( set_vector_pos,			"SetRykolVectorPos");*/
 
-void errorMessage (const char *msg, const char *title, Interface& it, bool dialog)
+void errorMessage (const MCHAR *msg, const TCHAR *title, Interface& it, bool dialog)
 {
 	// Text or dialog ?
 	if (dialog)
@@ -168,7 +168,8 @@ void errorMessage (const char *msg, const char *title, Interface& it, bool dialo
 	else
 	{
 		// Text message
-		mprintf ((string(msg) + "\n").c_str());
+		mprintf(msg);
+		mprintf(_M("\n"));
 	}
 }
 
@@ -180,7 +181,7 @@ export_zone_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "ExportRykolZone [Object]");
+	type_check(arg_list[0], MAXNode, _M("ExportRykolZone [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -237,7 +238,7 @@ Value* import_zone_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	char *help = "NeLImportZone filename dialogError";
+	MCHAR *help = _M("NeLImportZone filename dialogError");
 	type_check (arg_list[0], String, help);
 	type_check (arg_list[1], Boolean, help);
 
@@ -287,13 +288,15 @@ Value* import_zone_cf (Value** arg_list, int count)
 		catch (const Exception& e)
 		{
 			// Error message
-			errorMessage (("Error when loading file "+filename+": "+e.what()).c_str(), "NeL import zone", *ip, dialog);
+			std::string msg = toString("Error when loading file %s: %s", filename.c_str(), e.what());
+			errorMessage (utf8ToTStr(msg), _T("NeL import zone"), *ip, dialog);
 		}
 	}
 	else
 	{
 		// Error message
-		errorMessage (("Can't open the file "+filename+" for reading.").c_str(), "NeL import zone", *ip, dialog);
+		std::string msg = toString("Can't open the file %s for reading.", filename.c_str());
+		errorMessage (utf8ToTStr(msg), _T("NeL import zone"), *ip, dialog);
 	}
 
 	return ret;
@@ -307,7 +310,7 @@ get_selected_tile_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolSeltile [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolSeltile [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -354,7 +357,7 @@ get_selected_patch_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolSelPatch [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolSelPatch [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -401,7 +404,7 @@ get_selected_vertex_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolSelVertex [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolSelVertex [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -448,7 +451,7 @@ set_tile_mode_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykolTileMode [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykolTileMode [Object]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -498,7 +501,7 @@ set_compute_interior_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "RykolComputeInterior [Object]");
+	type_check(arg_list[0], MAXNode, _M("RykolComputeInterior [Object]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -546,7 +549,7 @@ set_interior_mode_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykolInteriorMode [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykolInteriorMode [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -598,7 +601,7 @@ set_vertex_count_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolVertexCount [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolVertexCount [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -638,7 +641,7 @@ set_vector_count_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolVectorCount [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolVectorCount [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -678,7 +681,7 @@ set_vertex_pos_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykolVertexPos [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykolVertexPos [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -728,7 +731,7 @@ set_vector_pos_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykolVectorPos [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykolVectorPos [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -778,7 +781,7 @@ get_vertex_pos_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolVertexPos [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolVertexPos [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -822,7 +825,7 @@ get_vector_pos_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolVectorPos [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolVectorPos [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -867,7 +870,7 @@ get_edge_vect1_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolEdgesVect1 [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolEdgesVect1 [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -911,7 +914,7 @@ get_edge_vect2_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolEdgesVect2 [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolEdgesVect2 [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -955,7 +958,7 @@ get_edge_vert1_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolEdgesVert1 [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolEdgesVert1 [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1000,7 +1003,7 @@ get_edge_vert2_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolEdgesVert2 [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolEdgesVert2 [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1044,7 +1047,7 @@ get_sel_edge_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykolSelEdges [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykolSelEdges [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1092,7 +1095,7 @@ set_steps_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykolPatchSteps [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykolPatchSteps [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1155,7 +1158,7 @@ set_tile_steps_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "SetRykoltileSteps [Object]");
+	type_check(arg_list[0], MAXNode, _M("SetRykoltileSteps [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1208,7 +1211,7 @@ get_tile_count_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolTileCount [Zone] [PatchNumber]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolTileCount [Zone] [PatchNumber]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1265,7 +1268,7 @@ Value* get_patch_vertex_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	char *message="NeLGetPatchVertex [NeLPatchMesh] [PatchId] [VertexId]";
+	const MCHAR *message= _M("NeLGetPatchVertex [NeLPatchMesh] [PatchId] [VertexId]");
 	type_check(arg_list[0], MAXNode, message);
 	type_check(arg_list[1], Integer, message);
 	type_check(arg_list[2], Integer, message);
@@ -1336,7 +1339,7 @@ get_patch_count_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "GetRykolPatchCount [Object]");
+	type_check(arg_list[0], MAXNode, _M("GetRykolPatchCount [Object]"));
 	//type_check(arg_list[1], Integer, "SetRykolPatchSteps [Object]");
 
 	// Get a good interface pointer
@@ -1389,10 +1392,10 @@ get_tile_tile_number_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]");
-	type_check(arg_list[1], Integer, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]");
-	type_check(arg_list[2], Integer, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]");
-	type_check(arg_list[3], Integer, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]");
+	type_check(arg_list[0], MAXNode, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]"));
+	type_check(arg_list[1], Integer, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]"));
+	type_check(arg_list[2], Integer, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]"));
+	type_check(arg_list[3], Integer, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber] [Layer]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -1411,7 +1414,7 @@ get_tile_tile_number_cf(Value** arg_list, int count)
 	uint layer=arg_list[3]->to_int()-1;
 	if (layer>=3)
 	{
-		mprintf ("Error: layer must be 1, 2, or 3\n");
+		mprintf (_M("Error: layer must be 1, 2, or 3\n"));
 	}
 	else
 	{
@@ -1427,7 +1430,7 @@ get_tile_tile_number_cf(Value** arg_list, int count)
 				uint nPatch=arg_list[1]->to_int()-1;
 				if (nPatch>=tri->rpatch->getUIPatchSize())
 				{
-					mprintf ("Error: patch index is invalid.\n");
+					mprintf (_M("Error: patch index is invalid.\n"));
 				}
 				else
 				{
@@ -1439,7 +1442,7 @@ get_tile_tile_number_cf(Value** arg_list, int count)
 					uint tile=arg_list[2]->to_int()-1;
 					if (tile>=nPatchCount)
 					{
-						mprintf ("Error: tile index is invalid.\n");
+						mprintf (_M("Error: tile index is invalid.\n"));
 					}
 					else
 					{
@@ -1475,9 +1478,9 @@ get_tile_noise_number_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber]");
-	type_check(arg_list[1], Integer, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber]");
-	type_check(arg_list[2], Integer, "NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber]");
+	type_check(arg_list[0], MAXNode, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber]"));
+	type_check(arg_list[1], Integer, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber]"));
+	type_check(arg_list[2], Integer, _M("NelGetTileTileNumber [Zone] [PatchNumber] [TileNumber]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -1504,7 +1507,7 @@ get_tile_noise_number_cf(Value** arg_list, int count)
 			uint nPatch=arg_list[1]->to_int()-1;
 			if (nPatch>=tri->rpatch->getUIPatchSize())
 			{
-				mprintf ("Error: patch index is invalid.\n");
+				mprintf (_M("Error: patch index is invalid.\n"));
 			}
 			else
 			{
@@ -1516,7 +1519,7 @@ get_tile_noise_number_cf(Value** arg_list, int count)
 				uint tile=arg_list[2]->to_int()-1;
 				if (tile>=nPatchCount)
 				{
-					mprintf ("Error: patch index is invalid.\n");
+					mprintf (_M("Error: patch index is invalid.\n"));
 				}
 				else
 				{
@@ -1544,10 +1547,10 @@ set_tile_noise_number_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]");
-	type_check(arg_list[1], Integer, "NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]");
-	type_check(arg_list[2], Integer, "NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]");
-	type_check(arg_list[3], Integer, "NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]");
+	type_check(arg_list[0], MAXNode, _M("NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]"));
+	type_check(arg_list[1], Integer, _M("NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]"));
+	type_check(arg_list[2], Integer, _M("NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]"));
+	type_check(arg_list[3], Integer, _M("NelGetTileNoiseNumber [Zone] [PatchNumber] [TileNumber] [noise]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -1566,7 +1569,7 @@ set_tile_noise_number_cf(Value** arg_list, int count)
 	uint noise=arg_list[3]->to_int()-1;
 	if (noise>=16)
 	{
-		mprintf ("Error: noise value must be 1~16\n");
+		mprintf (_M("Error: noise value must be 1~16\n"));
 	}
 	else
 	{
@@ -1582,7 +1585,7 @@ set_tile_noise_number_cf(Value** arg_list, int count)
 				uint nPatch=arg_list[1]->to_int()-1;
 				if (nPatch>=tri->rpatch->getUIPatchSize())
 				{
-					mprintf ("Error: patch index is invalid.\n");
+					mprintf (_M("Error: patch index is invalid.\n"));
 				}
 				else
 				{
@@ -1594,7 +1597,7 @@ set_tile_noise_number_cf(Value** arg_list, int count)
 					uint tile=arg_list[2]->to_int()-1;
 					if (tile>=nPatchCount)
 					{
-						mprintf ("Error: patch index is invalid.\n");
+						mprintf (_M("Error: patch index is invalid.\n"));
 					}
 					else
 					{
@@ -1646,13 +1649,13 @@ load_bank_cf(Value** arg_list, int count)
 			}
 			else
 			{
-				mprintf ("Error: can't open bank file %s\n", bankName.c_str());
+				mprintf (_M("Error: can't open bank file %s\n"), bankName.c_str());
 			}
 		}
 		catch (const Exception& e)
 		{
 			// Error message
-			mprintf ("Error: %s\n", e.what());
+			mprintf (_M("Error: %s\n"), e.what());
 		}
 	}
 
@@ -1668,7 +1671,7 @@ get_tile_set_cf(Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], Integer, "NelGetTileSet [tileId]");
+	type_check(arg_list[0], Integer, _M("NelGetTileSet [tileId]"));
 
 	// ok ?
 	int nRet=-1;
@@ -1677,7 +1680,7 @@ get_tile_set_cf(Value** arg_list, int count)
 	uint tile=arg_list[0]->to_int()-1;
 	if (tile>=(uint)scriptedBank.getTileCount())
 	{
-		mprintf ("Error: tile number is wrong. (1 ~ %d)\n", scriptedBank.getTileCount());
+		mprintf (_M("Error: tile number is wrong. (1 ~ %d)\n"), scriptedBank.getTileCount());
 	}
 	else
 	{
@@ -1702,7 +1705,7 @@ Value* set_tile_bank_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], String, "NelSetTileBank [tile bank pathname]");
+	type_check(arg_list[0], String, _M("NelSetTileBank [tile bank pathname]"));
 
 	// ok ?
 	const std::string pathname = tStrToUtf8(arg_list[0]->to_string());
@@ -1947,8 +1950,8 @@ attach_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "NeLAttachPatchMesh [RykolPatchMeshSrc] [RykolPatchMeshDest]");
-	type_check(arg_list[1], MAXNode, "NeLAttachPatchMesh [RykolPatchMeshSrc] [RykolPatchMeshDest]");
+	type_check(arg_list[0], MAXNode, _M("NeLAttachPatchMesh [RykolPatchMeshSrc] [RykolPatchMeshDest]"));
+	type_check(arg_list[1], MAXNode, _M("NeLAttachPatchMesh [RykolPatchMeshSrc] [RykolPatchMeshDest]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
@@ -2005,8 +2008,8 @@ weld_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "NeLWeldPatchMesh [RykolPatchMeshSrc] [threshold]");
-	type_check(arg_list[1], Float, "NeLWeldPatchMesh [RykolPatchMeshSrc] [threshold]");
+	type_check(arg_list[0], MAXNode, _M("NeLWeldPatchMesh [RykolPatchMeshSrc] [threshold]"));
+	type_check(arg_list[1], Float, _M("NeLWeldPatchMesh [RykolPatchMeshSrc] [threshold]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_edit/editpat.h b/code/nel/tools/3d/plugin_max/nel_patch_edit/editpat.h
index ec8947571..78e5ad0db 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_edit/editpat.h
+++ b/code/nel/tools/3d/plugin_max/nel_patch_edit/editpat.h
@@ -752,7 +752,7 @@ class EditPatchMod : public Modifier, IPatchOps, IPatchSelect, ISubMtlAPI, Attac
 		void BeginEditParams( IObjParam  *ip, ULONG flags, Animatable *prev );
 		void EndEditParams( IObjParam *ip, ULONG flags, Animatable *next );
 		RefTargetHandle Clone(RemapDir& remap = DefaultRemapDir());
-		TCHAR *GetObjectName() { return GetString(IDS_TH_EDITPATCH); }
+		const MCHAR *GetObjectName() { return GetString(IDS_TH_EDITPATCH); }
 		void ActivateSubobjSel(int level, XFormModes& modes );
 		int NeedUseSubselButton() { return 0; }
 		void SelectSubPatch(int index);
@@ -929,10 +929,10 @@ class EditPatchClassDesc:public ClassDesc {
 	{ 
 		return new EditPatchMod; 
 	}
-	const TCHAR *	ClassName() { return "NeL Edit"; }
+	const MCHAR *	ClassName() { return _M("NeL Edit"); }
 	SClass_ID		SuperClassID() { return OSM_CLASS_ID; }
 	Class_ID		ClassID() { return Class_ID(0x4dd14a3c, 0x4ac23c0c); }
-	const TCHAR* 	Category() { return "NeL Tools";}
+	const MCHAR* 	Category() { return _M("NeL Tools");}
 	void			ResetClassParams(BOOL fileReset);
 	};
 
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_edit/np.cpp b/code/nel/tools/3d/plugin_max/nel_patch_edit/np.cpp
index b44376b53..980bb64d8 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_edit/np.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_edit/np.cpp
@@ -890,9 +890,9 @@ Value *turn_patch_cf (Value** arg_list, int count)
 
 	// Check to see if the arguments match up to what we expect
 	// We want to use 'TurnAllTexturesOn <object to use>'
-	type_check(arg_list[0], MAXNode, "RykolTurnPatch [Node] [Modifier] [Patch]");
-    type_check(arg_list[1], MAXModifier, "RykolTurnPatch [Node] [Modifier] [Patch]"); 
-	type_check(arg_list[2], Integer, "RykolTurnPatch [Node] [Modifier] [Patch]");
+	type_check(arg_list[0], MAXNode, _M("RykolTurnPatch [Node] [Modifier] [Patch]"));
+	type_check(arg_list[1], MAXModifier, _M("RykolTurnPatch [Node] [Modifier] [Patch]"));
+	type_check(arg_list[2], Integer, _M("RykolTurnPatch [Node] [Modifier] [Patch]"));
 
 	// Get a good interface pointer
 	Interface *ip = MAXScript_interface;
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_edit/np_epm_material.cpp b/code/nel/tools/3d/plugin_max/nel_patch_edit/np_epm_material.cpp
index ace6d41cc..bc36eae43 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_edit/np_epm_material.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_edit/np_epm_material.cpp
@@ -276,7 +276,7 @@ void EditPatchMod::SetSelTess(int nU, int nV)
 	}	
 	
 	if (holdNeeded)
-		theHold.Accept("Tile count in U and V change");
+		theHold.Accept(_M("Tile count in U and V change"));
 	else 
 	{
 		ip->DisplayTempPrompt(GetString(IDS_TH_NOPATCHESSEL), PROMPT_TIME);
@@ -453,7 +453,7 @@ void EditPatchMod::setSmoothFlags (bool smooth)
 	}	
 	
 	if (holdNeeded)
-		theHold.Accept("Tile count in U and V change");
+		theHold.Accept(_M("Tile count in U and V change"));
 	else 
 	{
 		ip->DisplayTempPrompt(GetString(IDS_TH_NOPATCHESSEL), PROMPT_TIME);
@@ -589,7 +589,7 @@ void EditPatchMod::BalanceSelPatch ()
 	}	
 	
 	if (holdNeeded)
-		theHold.Accept("Balance tile");
+		theHold.Accept(_M("Balance tile"));
 	else 
 	{
 		ip->DisplayTempPrompt(GetString(IDS_TH_NOPATCHESSEL), PROMPT_TIME);
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_edit/np_main.cpp b/code/nel/tools/3d/plugin_max/nel_patch_edit/np_main.cpp
index a6f90a89c..bbe8e95a9 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_edit/np_main.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_edit/np_main.cpp
@@ -167,16 +167,14 @@ void EditPatchMod::BeginEditParams(IObjParam *ip, ULONG flags, Animatable *prev)
 
 	if (selLevel == EP_TILE)
 	{
-		hTilePanel = ip->AddRollupPage(hInstance, MAKEINTRESOURCE(IDD_EDPATCH_TILE),
-			PatchTileDlgProc, "Tile Properties", (LPARAM) this, rsTile ? 0 : APPENDROLL_CLOSED);
+		hTilePanel = ip->AddRollupPage(hInstance, MAKEINTRESOURCE(IDD_EDPATCH_TILE), PatchTileDlgProc, _M("Tile Properties"), (LPARAM) this, rsTile ? 0 : APPENDROLL_CLOSED);
 	}
 	else
 		hTilePanel = NULL;
 	
 	if (selLevel == EP_EDGE)
 	{
-		hEdgePanel = ip->AddRollupPage(hInstance, MAKEINTRESOURCE(IDD_EDPATCH_EDGE),
-			PatchEdgeDlgProc, "Edge Properties", (LPARAM) this, rsEdge ? 0 : APPENDROLL_CLOSED);
+		hEdgePanel = ip->AddRollupPage(hInstance, MAKEINTRESOURCE(IDD_EDPATCH_EDGE), PatchEdgeDlgProc, _M("Edge Properties"), (LPARAM) this, rsEdge ? 0 : APPENDROLL_CLOSED);
 	}
 	else
 		hEdgePanel = NULL;
@@ -328,7 +326,7 @@ ISubObjType *EditPatchMod::GetSubObjType(int i)
 		SOT_Vertex.SetName(GetString(IDS_TH_VERTEX));
 		SOT_Edge.SetName(GetString(IDS_TH_EDGE));
 		SOT_Patch.SetName(GetString(IDS_TH_PATCH));
-		SOT_Tile.SetName("Tile");
+		SOT_Tile.SetName(_M("Tile"));
 		// SOT_Element.SetName(GetString(IDS_TH_ELEMENT));
 		// SOT_Handle.SetName(GetString(IDS_TH_HANDLE));
 	}
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.cpp b/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.cpp
index 3acaf28bb..dada38542 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.cpp
@@ -43,9 +43,9 @@ class RPOClassDesc:public ClassDesc
 	{
 		return new RPO;
 	}
-	const TCHAR *	ClassName() 
+	const MCHAR *	ClassName() 
 	{
-		return _T("RklPatch");
+		return _M("RklPatch");
 	}
 	SClass_ID		SuperClassID() 
 	{
@@ -55,9 +55,9 @@ class RPOClassDesc:public ClassDesc
 	{
 		return RYKOLPATCHOBJ_CLASS_ID;
 	}
-	const TCHAR* 	Category() 
+	const MCHAR* 	Category() 
 	{
-		return _T("Rykol Tools");
+		return _M("Rykol Tools");
 	}
 };
 
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.h b/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.h
index 4464ce10f..0faa95aa6 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.h
+++ b/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo.h
@@ -83,14 +83,14 @@ class RPO : public PatchObject
 		int HitTest(TimeValue t, INode* inode, int type, int crossing, int flags, IPoint2 *p, ViewExp *vpt);
 		void Snap(TimeValue t, INode* inode, SnapInfo *snap, IPoint2 *p, ViewExp *vpt);
 		//TODO: Return the name that will appear in the history browser (modifier stack)
-		const MCHAR *GetObjectName() { return _T("Rykol Patch Object");}
+		const MCHAR *GetObjectName() { return _M("Rykol Patch Object");}
 		
 		void GetWorldBoundBox(TimeValue t, INode *mat, ViewExp *vpt, Box3& box );
 		void GetLocalBoundBox(TimeValue t, INode *mat, ViewExp *vpt, Box3& box );
 
 		void GetDeformBBox(TimeValue t, Box3& box, Matrix3 *tm, BOOL useSel );
 		//TODO: Return the default name of the node when it is created.
-		void InitNodeName(TSTR& s) { s.FromUTF8("Rykol Patch Object"); }
+		void InitNodeName(TSTR& s) { s = _M("Rykol Patch Object"); }
 		
 		// From Object
 		BOOL HasUVW();
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_paint/nel_patch_paint.h b/code/nel/tools/3d/plugin_max/nel_patch_paint/nel_patch_paint.h
index 20009d0c7..fdc49c2e2 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_paint/nel_patch_paint.h
+++ b/code/nel/tools/3d/plugin_max/nel_patch_paint/nel_patch_paint.h
@@ -482,7 +482,7 @@ class PaintPatchMod : public Modifier
 		void BeginEditParams( IObjParam  *ip, ULONG flags, Animatable *prev );
 		void EndEditParams( IObjParam *ip, ULONG flags, Animatable *next );
 		RefTargetHandle Clone(RemapDir& remap = DefaultRemapDir());
-		TCHAR *GetObjectName() { return "NeL Patch Painter"; }
+		const MCHAR *GetObjectName() { return _M("NeL Patch Painter"); }
 		
 		void RescaleWorldUnits(float f);
 
@@ -500,10 +500,10 @@ class EditPatchClassDesc:public ClassDesc {
 	{ 
 		return new PaintPatchMod; 
 	}
-	const TCHAR *	ClassName() { return "NeL Painter"; }
+	const MCHAR *	ClassName() { return _M("NeL Painter"); }
 	SClass_ID		SuperClassID() { return OSM_CLASS_ID; }
 	Class_ID		ClassID() { return Class_ID(0xc49560f, 0x3c3d68e7); }
-	const TCHAR* 	Category() { return "NeL Tools";}
+	const MCHAR* 	Category() { return _M("NeL Tools");}
 	void			ResetClassParams(BOOL fileReset);
 	};
 
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp b/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp
index de24e77de..b5894e9a8 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp
@@ -4034,7 +4034,7 @@ void EPM_PaintCMode::DoPaint ()
 			patchData->SetFlag(EPD_BEENDONE, TRUE);
 		}
 
-		theHold.Accept("Patch change");
+		theHold.Accept(_M("Patch change"));
 
 		nodes.DisposeTemporary();
 		pobj->ClearPatchDataFlag(mcList, EPD_BEENDONE);
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_paint/paint_main.cpp b/code/nel/tools/3d/plugin_max/nel_patch_paint/paint_main.cpp
index a4c22cbaf..a05fc67b7 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_paint/paint_main.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_paint/paint_main.cpp
@@ -47,8 +47,7 @@ void PaintPatchMod::BeginEditParams(IObjParam *ip, ULONG flags, Animatable *prev
 	
 	CreatePatchDataTempData();
 
-	hOpsPanel = ip->AddRollupPage(hInstance, MAKEINTRESOURCE(IDD_EDPATCH_OPS),
-		PatchOpsDlgProc, "Geometry", (LPARAM) this, rsOps ? 0 : APPENDROLL_CLOSED);
+	hOpsPanel = ip->AddRollupPage(hInstance, MAKEINTRESOURCE(IDD_EDPATCH_OPS), PatchOpsDlgProc, _M("Geometry"), (LPARAM) this, rsOps ? 0 : APPENDROLL_CLOSED);
 
 	// Create sub object editing modes.
 	paintMode		= new EPM_PaintCMode(this, ip);
diff --git a/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.cpp b/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.cpp
index 045d8489d..3d58b8027 100644
--- a/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.cpp
@@ -41,10 +41,10 @@ class VertexPaintClassDesc :public ClassDesc
 public:
 	int 			IsPublic() { return 1; }
 	void *			Create(BOOL loading = FALSE) { return new VertexPaint(); }
-	const TCHAR *	ClassName() { return GetString(IDS_CLASS_NAME); }
+	const MCHAR *	ClassName() { return GetString(IDS_CLASS_NAME); }
 	SClass_ID		SuperClassID() { return OSM_CLASS_ID; }
 	Class_ID		ClassID() { return VERTEX_TREE_PAINT_CLASS_ID; }
-	const TCHAR* 	Category() { return GetString(IDS_CATEGORY); }
+	const MCHAR* 	Category() { return GetString(IDS_CATEGORY); }
 	void			ResetClassParams(BOOL fileReset) {}
 };
 
diff --git a/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.h b/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.h
index 510828754..2921235c2 100644
--- a/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.h
+++ b/code/nel/tools/3d/plugin_max/nel_vertex_tree_paint/vertex_tree_paint.h
@@ -131,7 +131,7 @@ public:
 		void GetClassName(TSTR& s) { s= TSTR(GetString(IDS_CLASS_NAME)); }  
 		virtual Class_ID ClassID() { return VERTEX_TREE_PAINT_CLASS_ID;}		
 		RefTargetHandle Clone(RemapDir& remap = DefaultRemapDir());
-		TCHAR *GetObjectName() { return GetString(IDS_CLASS_NAME); }
+		const MCHAR *GetObjectName() { return GetString(IDS_CLASS_NAME); }
 		IOResult Load(ILoad *iload);
 		IOResult Save(ISave *isave);
 		IOResult LoadLocalData(ILoad *iload, LocalModData **pld);
diff --git a/code/nel/tools/3d/plugin_max/tile_utility/rgbadd.cpp b/code/nel/tools/3d/plugin_max/tile_utility/rgbadd.cpp
index a024c962c..68aa70b61 100644
--- a/code/nel/tools/3d/plugin_max/tile_utility/rgbadd.cpp
+++ b/code/nel/tools/3d/plugin_max/tile_utility/rgbadd.cpp
@@ -107,10 +107,10 @@ class RGBAddClassDesc:public ClassDesc2 {
 	const TCHAR *	ClassName() { return GetString(IDS_DS_RGBMULT_CDESC); } // mjm - 2.3.99
 	SClass_ID		SuperClassID() { return TEXMAP_CLASS_ID; }
 	Class_ID 		ClassID() { return RGBAddClassID; }
-	const TCHAR* 	Category() { return TEXMAP_CAT_COMP;  }
+	const MCHAR* 	Category() { return TEXMAP_CAT_COMP;  }
 // JBW: new descriptor data accessors added.  Note that the 
 //      internal name is hardwired since it must not be localized.
-	const TCHAR*	InternalName() { return _T("RGBAdd"); }	// returns fixed parsable name (scripter-visible name)
+	const MCHAR*	InternalName() { return _M("RGBAdd"); }	// returns fixed parsable name (scripter-visible name)
 	HINSTANCE		HInstance() { return hInstance; }			// returns owning module handle
 	};
 
diff --git a/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp b/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp
index 88d3ef41d..c77a027a9 100644
--- a/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp
+++ b/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp
@@ -75,8 +75,8 @@ class Tile_utilityClassDesc:public ClassDesc2
 	const TCHAR *	ClassName() {return _T("NeL Tile Bank");}
 	SClass_ID		SuperClassID() {return UTILITY_CLASS_ID;}
 	Class_ID		ClassID() {return TILE_UTILITY_CLASS_ID;}
-	const TCHAR* 	Category() {return _T("NeL Tools");}
-	const TCHAR*	InternalName() { return _T("NeL tile bank utility"); }	// returns fixed parsable name (scripter-visible name)
+	const MCHAR* 	Category() {return _M("NeL Tools");}
+	const MCHAR*	InternalName() { return _M("NeL tile bank utility"); }	// returns fixed parsable name (scripter-visible name)
 	HINSTANCE		HInstance() { return hInstance; }				// returns owning module handle
 };