diff --git a/code/ryzom/tools/leveldesign/csv_transform/csv_transform.cpp b/code/ryzom/tools/leveldesign/csv_transform/csv_transform.cpp
index cf4cb30d4..ae405d519 100644
--- a/code/ryzom/tools/leveldesign/csv_transform/csv_transform.cpp
+++ b/code/ryzom/tools/leveldesign/csv_transform/csv_transform.cpp
@@ -37,7 +37,7 @@ void splitStringCSV(const CSString& in,const CSString& separator,vector<CSString
 {
 	bool	lastEmpty = false;
 	CSString s=in.strip();
-	if (s.right(separator.size()) == separator)
+	if (s.right((uint)separator.size()) == separator)
 	{
 		// there is en empty column at end of line, remember this
 		lastEmpty = true;
@@ -46,16 +46,16 @@ void splitStringCSV(const CSString& in,const CSString& separator,vector<CSString
 	while (!s.empty())
 	{
 		// deal with empty columns first
-		while (s.left(separator.size())==separator)
+		while (s.left((uint)separator.size())==separator)
 		{
-			s=s.leftCrop(separator.size());
+			s=s.leftCrop((uint)separator.size());
 			result.push_back("");
 		}
 		if (!s.empty())
 		{
-			uint pos = s.find(separator.c_str(), 0);
-			CSString col = s.left(pos);
-			s=s.leftCrop(pos);
+			string::size_type pos = s.find(separator.c_str(), 0);
+			CSString col = s.left((uint)pos);
+			s=s.leftCrop((uint)pos);
 			if (!col.empty() && col[0] == '\"')
 			{
 				result.push_back(s.firstWordOrWords(true));
@@ -67,7 +67,7 @@ void splitStringCSV(const CSString& in,const CSString& separator,vector<CSString
 			while (s.left(separator.size())!=separator && !s.empty())
 				result.back()+=s.firstWordOrWords(true);
 */
-			s=s.leftCrop(separator.size());
+			s=s.leftCrop((uint)separator.size());
 		}
 	}
 	if (lastEmpty)
@@ -176,7 +176,7 @@ private:
 	void closeFooters()
 	{
 		// deal with footer paragraphs
-		for (uint32 i=tblColumnNames.size();i--;)
+		for (uint32 i=(uint32)tblColumnNames.size();i--;)
 		{
 			if (headerIsOpen[tblColumnNames[i]])
 			{
@@ -195,7 +195,7 @@ private:
 		CSString str = fileHeader + fileBody + fileFooter;
 
 		NLMISC::COFile of(filename, false, true);
-		of.serialBuffer((uint8*)str.data(), str.size());
+		of.serialBuffer((uint8*)str.data(), (uint)str.size());
 /*		out<<fileHeader;
 		out<<fileBody;
 		out<<fileFooter;
@@ -236,7 +236,7 @@ private:
 					}
 				}
 
-				for (uint32 i=tblColumnNames.size();(i--)>firstChange;)
+				for (uint32 i=(uint32)tblColumnNames.size();(i--)>firstChange;)
 				{
 					CSString s=footers[tblColumnNames[i]];
 					for (uint32 j=1;j<lastTblCols.size()&&j<tblColumnNames.size();++j)
diff --git a/code/ryzom/tools/leveldesign/export/export.cpp b/code/ryzom/tools/leveldesign/export/export.cpp
index 957b01fd8..99635ae65 100644
--- a/code/ryzom/tools/leveldesign/export/export.cpp
+++ b/code/ryzom/tools/leveldesign/export/export.cpp
@@ -28,11 +28,11 @@
 #include "nel/georges/u_form.h"
 #include "nel/georges/u_form_elm.h"
 
-#include "3d/zone.h"
-#include "3d/landscape.h"
-#include "3d/scene_group.h"
-#include "3d/visual_collision_manager.h"
-#include "3d/visual_collision_entity.h"
+#include "nel/3d/zone.h"
+#include "nel/3d/landscape.h"
+#include "nel/3d/scene_group.h"
+#include "nel/3d/visual_collision_manager.h"
+#include "nel/3d/visual_collision_entity.h"
 
 #include "nel/misc/o_xml.h"
 #include "nel/misc/i_xml.h"
diff --git a/code/ryzom/tools/leveldesign/export/tools.cpp b/code/ryzom/tools/leveldesign/export/tools.cpp
index eabc999a6..0d93a95ff 100644
--- a/code/ryzom/tools/leveldesign/export/tools.cpp
+++ b/code/ryzom/tools/leveldesign/export/tools.cpp
@@ -39,10 +39,13 @@ void CTools::mkdir (const string &dirName)
 	SetCurrentDirectory (newDir.c_str());
 	// Create upper levels
 	newDir = "";
-	int pos = dirName.rfind('\\');
-	for (int i = 0; i < pos; ++i)
-		newDir += dirName[i];
-	mkdir (newDir);
+	string::size_type pos = dirName.rfind('\\');
+	if (pos != string::npos)
+	{
+		for (uint i = 0; i < pos; ++i)
+			newDir += dirName[i];
+		mkdir (newDir);
+	}
 	// Create Directory
 	if (!CreateDirectory(dirName.c_str(),NULL))
 		throw Exception(string("Cannot create directory ")+dirName);
diff --git a/code/ryzom/tools/leveldesign/georges_convert/type_unit_double.cpp b/code/ryzom/tools/leveldesign/georges_convert/type_unit_double.cpp
index 8811c72dc..777878875 100644
--- a/code/ryzom/tools/leveldesign/georges_convert/type_unit_double.cpp
+++ b/code/ryzom/tools/leveldesign/georges_convert/type_unit_double.cpp
@@ -59,7 +59,7 @@ CStringEx CTypeUnitDouble::FormatDouble( const double dvalue ) const
 		sx.insert(decimal,".");
 
 	while( sx[sx.length()-1] == '0' )
-		sx.left( sx.length() -1 );
+		sx.left( (int)sx.length() -1 );
 	
 	if( sx[sx.length()-1] == '.' )
 		sx += '0';
@@ -94,12 +94,12 @@ CStringEx CTypeUnitDouble::Format( const CStringEx _sxvalue ) const
 	value.purge();
 	while( value[0] == '<' )
 	{
-		unsigned int pos = value.find( '>' );
-		if( pos == -1 )
+		std::string::size_type pos = value.find( '>' );
+		if( pos == std::string::npos )
 			break;
 		CStringEx sxoperateur = value.get_mid( 1, 1 );
-		CStringEx sxoperande = value.get_mid( 2, pos-2);
-		value.right( value.size()-pos-1 );
+		CStringEx sxoperande = value.get_mid( 2, (int)pos-2);
+		value.right( (int)(value.size()-pos-1) );
 		modificationValues.push_back( std::make_pair( sxoperateur, sxoperande ) );
 	}
 	if( modificationValues.size() )
@@ -144,12 +144,12 @@ CStringEx CTypeUnitDouble::CalculateResult( const CStringEx _sxbasevalue, const
 	value.purge();
 	while( value[0] == '<' )
 	{
-		unsigned int pos = value.find( '>' );
-		if( pos == -1 )
+		std::string::size_type pos = value.find( '>' );
+		if( pos == std::string::npos )
 			break;
 		CStringEx sxoperateur = value.get_mid( 1, 1 );
-		CStringEx sxoperande = value.get_mid( 2, pos-2);
-		value.right( value.size()-pos-1 );
+		CStringEx sxoperande = value.get_mid( 2, (int)pos-2);
+		value.right( (int)(value.size()-pos-1) );
 		modificationValues.push_back( std::make_pair( sxoperateur, sxoperande ) );
 	}
 	if( modificationValues.size() )
diff --git a/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_signed.cpp b/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_signed.cpp
index 8455d0c3d..ab845a251 100644
--- a/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_signed.cpp
+++ b/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_signed.cpp
@@ -51,12 +51,12 @@ CStringEx CTypeUnitIntSigned::Format( const CStringEx _sxvalue ) const
 	value.purge();
 	while( value[0] == '<' )
 	{
-		unsigned int pos = value.find( '>' );
-		if( pos == -1 )
+		std::string::size_type pos = value.find( '>' );
+		if( pos == std::string::npos )
 			break;
 		CStringEx sxoperateur = value.get_mid( 1, 1 );
 		CStringEx sxoperande = value.get_mid( 2, pos-2);
-		value.right( value.size()-pos-1 );
+		value.right( (int)(value.size()-pos-1) );
 		modificationValues.push_back( std::make_pair( sxoperateur, sxoperande ) );
 	}
 	if( modificationValues.size() )
@@ -96,12 +96,12 @@ CStringEx CTypeUnitIntSigned::CalculateResult( const CStringEx _sxbasevalue, con
 	value.purge();
 	while( value[0] == '<' )
 	{
-		unsigned int pos = value.find( '>' );
-		if( pos == -1 )
+		std::string::size_type pos = value.find( '>' );
+		if( pos == std::string::npos )
 			break;
 		CStringEx sxoperateur = value.get_mid( 1, 1 );
-		CStringEx sxoperande = value.get_mid( 2, pos-2);
-		value.right( value.size()-pos-1 );
+		CStringEx sxoperande = value.get_mid( 2, (int)pos-2);
+		value.right( (int)(value.size()-pos-1) );
 		modificationValues.push_back( std::make_pair( sxoperateur, sxoperande ) );
 	}
 	if( modificationValues.size() )
diff --git a/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_unsigned.cpp b/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_unsigned.cpp
index 3155aef63..01312b9b4 100644
--- a/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_unsigned.cpp
+++ b/code/ryzom/tools/leveldesign/georges_convert/type_unit_int_unsigned.cpp
@@ -69,12 +69,12 @@ CStringEx CTypeUnitIntUnsigned::Format( const CStringEx _sxvalue ) const
 	value.purge();
 	while( value[0] == '<' )
 	{
-		unsigned int pos = value.find( '>' );
-		if( pos == -1 )
+		std::string::size_type pos = value.find( '>' );
+		if( pos == std::string::npos )
 			break;
 		CStringEx sxoperateur = value.get_mid( 1, 1 );
-		CStringEx sxoperande = value.get_mid( 2, pos-2);
-		value.right( value.size()-pos-1 );
+		CStringEx sxoperande = value.get_mid( 2, (int)pos-2);
+		value.right( (int)(value.size()-pos-1) );
 		modificationValues.push_back( std::make_pair( sxoperateur, sxoperande ) );
 	}
 	if( modificationValues.size() )
@@ -124,12 +124,12 @@ CStringEx CTypeUnitIntUnsigned::CalculateResult( const CStringEx _sxbasevalue, c
 	value.purge();
 	while( value[0] == '<' )
 	{
-		unsigned int pos = value.find( '>' );
-		if( pos == -1 )
+		std::string::size_type pos = value.find( '>' );
+		if( pos == std::string::npos )
 			break;
 		CStringEx sxoperateur = value.get_mid( 1, 1 );
-		CStringEx sxoperande = value.get_mid( 2, pos-2);
-		value.right( value.size()-pos-1 );
+		CStringEx sxoperande = value.get_mid( 2, (int)pos-2);
+		value.right( (int)(value.size()-pos-1) );
 		modificationValues.push_back( std::make_pair( sxoperateur, sxoperande ) );
 	}
 	if( modificationValues.size() )
diff --git a/code/ryzom/tools/leveldesign/icon_search/icon_search.cpp b/code/ryzom/tools/leveldesign/icon_search/icon_search.cpp
index 27d9b7e5e..64bf4f39b 100644
--- a/code/ryzom/tools/leveldesign/icon_search/icon_search.cpp
+++ b/code/ryzom/tools/leveldesign/icon_search/icon_search.cpp
@@ -57,7 +57,7 @@ void findIcons(CConfigFile::CVar *var)
 	vector<string> files;
 
 	// Scan each directory
-	for (int i=0 ; i<var->size() ; i++)
+	for (uint i=0 ; i<var->size() ; i++)
 	{
 		// clear files list
 		files.clear();
@@ -82,7 +82,7 @@ string remap2Jpg(const string &s)
 {
 	// change extension from TGA to JPG
 	string jpg(s);
-	uint n = jpg.find(".tga");
+	string::size_type n = jpg.find(".tga");
 	nlassert(n != string::npos);
 	jpg.erase(n);
 	jpg += ".jpg";
@@ -92,7 +92,7 @@ string remap2Jpg(const string &s)
 
 void writeString(COFile &f, const string &s)
 {
-	f.serialBuffer((uint8*)s.c_str(), s.size());
+	f.serialBuffer((uint8*)s.c_str(), (uint)s.size());
 }
 
 void writeHTMLline(COFile &f, const string &icon, const StringVector files, uint sizeLimit)
@@ -113,9 +113,9 @@ void writeHTMLline(COFile &f, const string &icon, const StringVector files, uint
 	// fix limit based on configuration file
 	uint n;
 	if (sizeLimit == 0)
-		n = files.size();
+		n = (uint)files.size();
 	else
-		n = sizeLimit > files.size() ? files.size() : sizeLimit;
+		n = sizeLimit > files.size() ? (uint)files.size() : sizeLimit;
 
 	// write each file using this icon
 	for (uint i=0 ; i<n ; i++)
@@ -174,7 +174,7 @@ void convertImages(CConfigFile::CVar *var)
 		CFile::createDirectory("images");
 
 	// Scan each directory
-	for (int i=0 ; i<var->size() ; i++)
+	for (uint i=0 ; i<var->size() ; i++)
 	{
 		string path = CPath::standardizePath(var->asString(i));
 		vector<string> files;
@@ -206,7 +206,7 @@ void convertImages(CConfigFile::CVar *var)
 
 bool endsWith( const CSString& s, const CSString& substring )
 {
-	return ( s.right( substring.size() ) == substring );
+	return ( s.right( (uint)substring.size() ) == substring );
 }
 
 void ProcessDirectory( const CSString& dir, const StringVector& extensions )
@@ -220,7 +220,7 @@ void ProcessDirectory( const CSString& dir, const StringVector& extensions )
 	printf( "%s\n", dir.c_str() );
 	CPath::getPathContent ( dir.c_str(), true, false, true, files );
 
-	sixieme = files.size() / 6;
+	sixieme = (int)files.size() / 6;
 
 	printf( "%d files are processed", files.size() );
 
@@ -240,7 +240,7 @@ void ProcessDirectory( const CSString& dir, const StringVector& extensions )
 			data.readFromFile( files[i] );
 
 			// Don't parse LOG
-			uint n = data.find("<LOG>");
+			string::size_type n = data.find("<LOG>");
 			if (n != CSString::npos)
 				data.erase(n);
 
@@ -328,7 +328,7 @@ void main()
 
 	var = cf.getVarPtr("Wildcard");
 	if (var)
-	for (int i=0 ; i<var->size() ; i++)
+	for (uint i=0 ; i<var->size() ; i++)
 	for (uint it=0; it<listeIcones.size(); it++)
 	{
 		string wild = var->asString(i);
diff --git a/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp b/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp
index 051808791..242a7ed72 100644
--- a/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp
+++ b/code/ryzom/tools/leveldesign/mission_compiler_lib/mission_compiler.cpp
@@ -833,7 +833,7 @@ bool CMissionCompiler::publishFiles(const std::string &serverPathPrim, const std
 	{
 		string dst, src = _FilesToPublish[i];
 
-		uint n = src.find("primitives");
+		string::size_type n = src.find("primitives");
 		if (n == string::npos)
 		{
 			// text files : copy it and check include in phrase_rites_wk.txt
@@ -2229,7 +2229,7 @@ std::vector<TCompilerVarName> TCompilerVarName::getPropertyArrayWithText(const s
 
 	std::vector<std::string> values = md.getPropertyArray(prim, arrayProperyName,false, false);
 	uint first = 0;
-	uint last = values.size();
+	uint last = (uint)values.size();
 	compilerParams.resize(last);
 	for ( ; first != last; ++first) 
 	{		
@@ -2244,7 +2244,7 @@ std::vector<TCompilerVarName> TCompilerVarName::getPropertyArrayWithTextStaticDe
 	std::vector<TCompilerVarName> compilerParams;
 	std::vector<std::string> values = md.getPropertyArray(prim, arrayProperyName,false, false);
 	uint first = 0;
-	uint last = values.size();
+	uint last = (uint)values.size();
 	compilerParams.resize(last);
 	for ( ; first != last; ++first) 
 	{		
diff --git a/code/ryzom/tools/leveldesign/named_items_2_csv/named_items_2_csv.cpp b/code/ryzom/tools/leveldesign/named_items_2_csv/named_items_2_csv.cpp
index cc1a3a31d..9b53f4110 100644
--- a/code/ryzom/tools/leveldesign/named_items_2_csv/named_items_2_csv.cpp
+++ b/code/ryzom/tools/leveldesign/named_items_2_csv/named_items_2_csv.cpp
@@ -136,7 +136,7 @@ void processItemLine(const string &s)
 			if (!CSString::isValidFileNameChar(s[field.size()]))
 			{
 				// get value
-				int pos = s.find("=");
+				string::size_type pos = s.find("=");
 				nlassert(pos != string::npos);
 				string val(s, pos+1);
 
@@ -349,7 +349,7 @@ void updateItemField(CVectorSString &lines, uint itemIndex, uint fieldIndex, uin
 	for (i=a ; i<b ; i++)
 	{
 		string line = s + "= " + val;
-		uint pos = pos = lines[i].find(line.c_str());
+		string::size_type pos = lines[i].find(line.c_str());
 		if (pos != string::npos)
 		{
 			found = true;
@@ -361,7 +361,7 @@ void updateItemField(CVectorSString &lines, uint itemIndex, uint fieldIndex, uin
 	i = a-1;
 	while (++i<b && !found)
 	{
-		uint pos;
+		string::size_type pos;
 
 		// store the line "_CraftParameters" : reference line
 		if (craftLine == 0)
diff --git a/code/ryzom/tools/leveldesign/prim_export/main.cpp b/code/ryzom/tools/leveldesign/prim_export/main.cpp
index 77ffcd143..3ac38dec6 100644
--- a/code/ryzom/tools/leveldesign/prim_export/main.cpp
+++ b/code/ryzom/tools/leveldesign/prim_export/main.cpp
@@ -30,9 +30,9 @@
 #include "nel/georges/u_form_elm.h"
 #include "nel/georges/u_form_loader.h"
 
-#include "nel/../../src/3d/zone.h"
-#include "nel/../../src/3d/landscape.h"
-#include "nel/../../src/3d/scene_group.h"
+#include "nel/3d/zone.h"
+#include "nel/3d/landscape.h"
+#include "nel/3d/scene_group.h"
 
 #include <windows.h>
 
@@ -121,7 +121,7 @@ public:
 			pgId= min(pgId, (uint)(BAR_LENGTH-1));
 			sprintf (msg, "\r%s: %s", DisplayString.c_str (), progressbar[pgId]);
 			uint i;
-			for (i=strlen(msg); i<79; i++)
+			for (i=(uint)strlen(msg); i<79; i++)
 				msg[i]=' ';
 			msg[i]=0;
 			printf (msg);
@@ -161,8 +161,8 @@ bool getZoneCoordByName(const char * name, uint16& x, uint16& y)
 	std::string zoneName(name);
 
 	// y
-	uint ind1 = zoneName.find("_");
-	if(ind1>=zoneName.length())
+	std::string::size_type ind1 = zoneName.find("_");
+	if(ind1 == std::string::npos)
 	{
 		nlwarning("bad file name");
 		return false;
@@ -180,7 +180,7 @@ bool getZoneCoordByName(const char * name, uint16& x, uint16& y)
 
 	// x
 	x = 0;
-	uint ind2 = zoneName.length();
+	uint ind2 = (uint)zoneName.length();
 	if((ind2-ind1-1)!=2)
 	{
 		nlwarning("x code size is not a 2 characters code");
@@ -868,7 +868,7 @@ int main (int argc, char**argv)
 				CPath::getPathContent (options.PrimDirs[i], true, false, true, files);
 
 			// For each
-			uint fileCount = files.size ();
+			uint fileCount = (uint)files.size ();
 			for (i=0; i<fileCount; i++)
 			{
 				// Primitive file ?
@@ -1005,7 +1005,7 @@ int main (int argc, char**argv)
 										uint layer = instance.AdditionnalInfo[i].SnapLayer;
 										
 										// Found some triangles ?
-										const uint setSize = selectedHeight.size ();
+										const uint setSize = (uint)selectedHeight.size ();
 										if (setSize)
 										{
 											// Look for the triangle in the good layer