diff --git a/code/ryzom/client/src/interface_v3/interface_parser.cpp b/code/ryzom/client/src/interface_v3/interface_parser.cpp
index f09df1f4a..b874b709e 100644
--- a/code/ryzom/client/src/interface_v3/interface_parser.cpp
+++ b/code/ryzom/client/src/interface_v3/interface_parser.cpp
@@ -2197,8 +2197,8 @@ bool CInterfaceParser::parseTree (xmlNodePtr cur, SMasterGroup *parentGroup)
 		for (uint32 j = 0; j < rMG.Group->getGroups().size(); ++j)
 		{
 			CInterfaceGroup *pIG = rMG.Group->getGroups()[j];
-			string stmp = strlwr(pIG->getId().substr(pIG->getId().rfind(':')+1,pIG->getId().size()));
-			string stmp2 = strlwr(string((const char*)ptr));
+			string stmp = NLMISC::toLower(pIG->getId().substr(pIG->getId().rfind(':')+1,pIG->getId().size()));
+			string stmp2 = NLMISC::toLower(string((const char*)ptr));
 			if (stmp == stmp2)
 			{
 				pEltFound = pIG;
diff --git a/code/ryzom/client/src/r2/displayer_lua.cpp b/code/ryzom/client/src/r2/displayer_lua.cpp
index a2df79851..cb823c033 100644
--- a/code/ryzom/client/src/r2/displayer_lua.cpp
+++ b/code/ryzom/client/src/r2/displayer_lua.cpp
@@ -22,6 +22,12 @@
 namespace R2
 {
 
+// *********************************************************************************************************
+CDisplayerLua::CDisplayerLua()
+{
+	_ToLua._Displayer = this;
+}
+
 // *********************************************************************************************************
 bool CDisplayerLua::init(const CLuaObject &parameters)
 {
@@ -53,9 +59,14 @@ bool CDisplayerLua::init(const CLuaObject &parameters)
 }
 
 // *********************************************************************************************************
-CDisplayerLua &CDisplayerLua::CToLua::getEnclosing()
+CDisplayerLua::CToLua::CToLua():_Displayer(NULL)
 {
-	return *(CDisplayerLua *) ((uint8 *) this - offsetof(CDisplayerLua, _ToLua)); // ugly, yes ...
+}
+
+// *********************************************************************************************************
+CDisplayerLua* CDisplayerLua::CToLua::getEnclosing()
+{
+	return _Displayer;
 }
 
 // *********************************************************************************************************
@@ -79,7 +90,8 @@ void CDisplayerLua::CToLua::executeHandler(const CLuaString &eventName, int numA
 	ls.insert(- numArgs - 1);
 	if (dumpStackWanted) ls.dumpStack();
 	// First arg always is the instance being displayed
-	getEnclosing().getDisplayedInstance()->getLuaProjection().push();
+	if (getEnclosing())
+		getEnclosing()->getDisplayedInstance()->getLuaProjection().push();
 	ls.insert(- numArgs - 1);
 	if (dumpStackWanted) ls.dumpStack();
 	CLuaIHM::executeFunctionOnStack(*_LuaTable.getLuaState(),  numArgs + 2,  0);
diff --git a/code/ryzom/client/src/r2/displayer_lua.h b/code/ryzom/client/src/r2/displayer_lua.h
index 675042bf0..6cfb2ac64 100644
--- a/code/ryzom/client/src/r2/displayer_lua.h
+++ b/code/ryzom/client/src/r2/displayer_lua.h
@@ -28,6 +28,7 @@ class CDisplayerLua : public CDisplayerBase
 {
 public:
 	NLMISC_DECLARE_CLASS(R2::CDisplayerLua);
+	CDisplayerLua();
 	// expected parameter is a ctor function
 	virtual bool init(const CLuaObject &parameters);
 	virtual void pushLuaAccess(CLuaState &ls);
@@ -55,11 +56,13 @@ private:
 	class CToLua : public CLuaEventForwarder
 	{
 	public:
+		CToLua();
 		CLuaObject _LuaTable; // reference to lua version of the displayer
+		CDisplayerLua *_Displayer;
 		virtual CLuaState *getLua();
 		virtual void executeHandler(const CLuaString &eventName, int numArgs);
 		void pushLuaAccess(CLuaState &ls);
-		CDisplayerLua &getEnclosing();
+		CDisplayerLua* getEnclosing();
 	};
 	friend class CToLua;
 	CToLua _ToLua;
diff --git a/code/ryzom/client/src/r2/editor.cpp b/code/ryzom/client/src/r2/editor.cpp
index 50d54c230..a068af182 100644
--- a/code/ryzom/client/src/r2/editor.cpp
+++ b/code/ryzom/client/src/r2/editor.cpp
@@ -1856,7 +1856,7 @@ CInstanceObserverLua::~CInstanceObserverLua()
 	#ifdef NL_DEBUG
 		nlassert(!getEditor().isInstanceObserver(this));
 	#endif
-	nlassert(_Count >= 0);
+	nlassert(_Count < 1000000000);
 	-- _Count;
 }