diff --git a/code/nel/include/nel/gui/ctrl_button.h b/code/nel/include/nel/gui/ctrl_button.h
index 02b827329..1910ea72a 100644
--- a/code/nel/include/nel/gui/ctrl_button.h
+++ b/code/nel/include/nel/gui/ctrl_button.h
@@ -51,7 +51,7 @@ namespace NLGUI
 		xmlNodePtr serialize( xmlNodePtr parentNode, const char *type ) const;
 
 		// Init part
-		virtual bool parse (xmlNodePtr cur,CInterfaceGroup * parentGroup);
+		virtual bool parse (xmlNodePtr cur, CInterfaceGroup * parentGroup);
 
 		virtual void updateCoords();
 
diff --git a/code/nel/include/nel/gui/ctrl_text_button.h b/code/nel/include/nel/gui/ctrl_text_button.h
index 4f5251a8b..69898639d 100644
--- a/code/nel/include/nel/gui/ctrl_text_button.h
+++ b/code/nel/include/nel/gui/ctrl_text_button.h
@@ -49,7 +49,7 @@ namespace NLGUI
 		xmlNodePtr serialize( xmlNodePtr parentNode, const char *type ) const;
 
 		// Init part
-		virtual bool parse (xmlNodePtr cur,CInterfaceGroup * parentGroup);
+		virtual bool parse (xmlNodePtr cur, CInterfaceGroup * parentGroup);
 
 		virtual void checkCoords();
 		virtual void updateCoords();
diff --git a/code/nel/include/nel/gui/dbgroup_combo_box.h b/code/nel/include/nel/gui/dbgroup_combo_box.h
index 1aac8bb1f..87e6d758a 100644
--- a/code/nel/include/nel/gui/dbgroup_combo_box.h
+++ b/code/nel/include/nel/gui/dbgroup_combo_box.h
@@ -64,7 +64,7 @@ namespace NLGUI
 		uint			getTextPos(uint nId) const;
 		const ucstring	&getTexture(uint i) const;
 		void			setGrayed(uint i, bool g);
-		const bool		getGrayed(uint i) const;
+		bool			getGrayed(uint i) const;
 		void			removeText(uint nPos);
 		uint			getNumTexts() const {return (uint)_Texts.size();}
 		void			sortText();
diff --git a/code/nel/src/gui/dbgroup_combo_box.cpp b/code/nel/src/gui/dbgroup_combo_box.cpp
index 572d69ad4..184829e4c 100644
--- a/code/nel/src/gui/dbgroup_combo_box.cpp
+++ b/code/nel/src/gui/dbgroup_combo_box.cpp
@@ -321,7 +321,7 @@ namespace NLGUI
 	}
 
 	// ***************************************************************************
-	const bool	CDBGroupComboBox::getGrayed(uint i) const
+	bool	CDBGroupComboBox::getGrayed(uint i) const
 	{
 		if(i<_Grayed.size())
 			return _Grayed[i];
diff --git a/code/ryzom/client/src/interface_v3/interface_3d_scene.cpp b/code/ryzom/client/src/interface_v3/interface_3d_scene.cpp
index d7fec407b..bb15d8d4b 100644
--- a/code/ryzom/client/src/interface_v3/interface_3d_scene.cpp
+++ b/code/ryzom/client/src/interface_v3/interface_3d_scene.cpp
@@ -786,7 +786,7 @@ CInterface3DCharacter::~CInterface3DCharacter()
 }
 
 // ----------------------------------------------------------------------------
-bool CInterface3DCharacter::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
+bool CInterface3DCharacter::parse (xmlNodePtr cur, CInterfaceGroup *parentGroup)
 {
 	if (!CInterfaceElement::parse(cur, parentGroup))
 		return false;
@@ -808,7 +808,7 @@ bool CInterface3DCharacter::parse (xmlNodePtr cur, CInterface3DScene *parentGrou
 
 	_Char3D = new CCharacter3D;
 	_Char3D->copyAnimation(copyAnim);
-	_Char3D->init (parentGroup->getScene());
+	_Char3D->init (dynamic_cast<CInterface3DScene*>(parentGroup)->getScene());
 	_Char3D->setPos (pos.x, pos.y, pos.z);
 	_Char3D->setRotEuler (	rot.x * ((float)(NLMISC::Pi / 180)),
 							rot.y * ((float)(NLMISC::Pi / 180)),
@@ -1073,7 +1073,7 @@ CInterface3DIG::~CInterface3DIG()
 }
 
 // ----------------------------------------------------------------------------
-bool CInterface3DIG::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
+bool CInterface3DIG::parse (xmlNodePtr cur, CInterfaceGroup *parentGroup)
 {
 	if (!CInterfaceElement::parse(cur, parentGroup))
 		return false;
@@ -1095,8 +1095,8 @@ bool CInterface3DIG::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
 	setRotX (_Rot.x);
 	setRotY (_Rot.y);
 	setRotZ (_Rot.z);
-	_IG->addToScene (*parentGroup->getScene(), CViewRenderer::getInstance()->getDriver() );
-	parentGroup->getScene()->setToGlobalInstanceGroup (_IG);
+	_IG->addToScene (*dynamic_cast<CInterface3DScene*>(parentGroup)->getScene(), CViewRenderer::getInstance()->getDriver() );
+	dynamic_cast<CInterface3DScene*>(parentGroup)->getScene()->setToGlobalInstanceGroup (_IG);
 
 	return true;
 }
@@ -1235,7 +1235,7 @@ CInterface3DShape::~CInterface3DShape()
 }
 
 // ----------------------------------------------------------------------------
-bool CInterface3DShape::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
+bool CInterface3DShape::parse (xmlNodePtr cur, CInterfaceGroup *parentGroup)
 {
 	if (!CInterfaceElement::parse(cur, parentGroup))
 		return false;
@@ -1249,7 +1249,7 @@ bool CInterface3DShape::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
 	ptr = xmlGetProp (cur, (xmlChar*)"name");
 	if (ptr) _Name = toLower((const char*)ptr);
 
-	_Instance = parentGroup->getScene()->createInstance(_Name);
+	_Instance = dynamic_cast<CInterface3DScene*>(parentGroup)->getScene()->createInstance(_Name);
 	if (_Instance.empty())
 		return false;
 
@@ -1385,7 +1385,7 @@ void CInterface3DShape::setName (const std::string &ht)
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
-bool CInterface3DCamera::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
+bool CInterface3DCamera::parse (xmlNodePtr cur, CInterfaceGroup *parentGroup)
 {
 	if (!CInterfaceElement::parse(cur, parentGroup))
 		return false;
@@ -1422,12 +1422,12 @@ CInterface3DLight::~CInterface3DLight()
 }
 
 // ----------------------------------------------------------------------------
-bool CInterface3DLight::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
+bool CInterface3DLight::parse (xmlNodePtr cur, CInterfaceGroup *parentGroup)
 {
 	if (!CInterfaceElement::parse(cur, parentGroup))
 		return false;
 
-	_Light = parentGroup->getScene()->createPointLight();
+	_Light = dynamic_cast<CInterface3DScene*>(parentGroup)->getScene()->createPointLight();
 
 	CXMLAutoPtr ptr((const char*)xmlGetProp (cur, (xmlChar*)"pos"));
 	if (ptr) _Pos = convertVector(ptr);
@@ -1514,7 +1514,7 @@ CInterface3DFX::~CInterface3DFX()
 }
 
 // ----------------------------------------------------------------------------
-bool CInterface3DFX::parse (xmlNodePtr cur, CInterface3DScene *parentGroup)
+bool CInterface3DFX::parse (xmlNodePtr cur, CInterfaceGroup *parentGroup)
 {
 	if (!CInterfaceElement::parse(cur, parentGroup))
 		return false;
diff --git a/code/ryzom/client/src/interface_v3/interface_3d_scene.h b/code/ryzom/client/src/interface_v3/interface_3d_scene.h
index cabfb0184..5343390c8 100644
--- a/code/ryzom/client/src/interface_v3/interface_3d_scene.h
+++ b/code/ryzom/client/src/interface_v3/interface_3d_scene.h
@@ -148,7 +148,7 @@ public:
 	CInterface3DCharacter();
 	virtual ~CInterface3DCharacter();
 
-	virtual bool parse (xmlNodePtr cur, CInterface3DScene *parentGroup);
+	virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
 
 	virtual void checkCoords();
 
@@ -236,7 +236,7 @@ public:
 
 	virtual ~CInterface3DShape();
 
-	virtual bool parse (xmlNodePtr cur, CInterface3DScene *parentGroup);
+	virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
 
 	NL3D::UInstance getShape() { return _Instance; }
 
@@ -295,7 +295,7 @@ public:
 
 	virtual ~CInterface3DIG();
 
-	virtual bool parse (xmlNodePtr cur, CInterface3DScene *parentGroup);
+	virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
 
 	NL3D::UInstanceGroup *getIG() { return _IG; }
 
@@ -357,7 +357,7 @@ public:
 		_Dist = 0;
 	}
 
-	virtual bool parse (xmlNodePtr cur, CInterface3DScene *parentGroup);
+	virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
 	float getFOV()				{ return _FOV; }
 	NLMISC::CVector getPos()	{ return _Pos; }
 	NLMISC::CVector getTarget() { return _Target; }
@@ -436,7 +436,7 @@ public:
 
 	virtual ~CInterface3DLight();
 
-	virtual bool parse (xmlNodePtr cur, CInterface3DScene *parentGroup);
+	virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
 
 	float getPosX() const	{ return _Pos.x; }
 	float getPosY() const	{ return _Pos.y; }
@@ -498,7 +498,7 @@ public:
 
 	virtual ~CInterface3DFX();
 
-	virtual bool parse (xmlNodePtr cur, CInterface3DScene *parentGroup);
+	virtual bool parse (xmlNodePtr cur, CInterfaceGroup *parentGroup);
 
 	virtual void checkCoords();