diff --git a/nel/src/gui/lua_ihm.cpp b/nel/src/gui/lua_ihm.cpp
index 229cd1f0f..8d4d64b88 100644
--- a/nel/src/gui/lua_ihm.cpp
+++ b/nel/src/gui/lua_ihm.cpp
@@ -1123,7 +1123,6 @@ namespace NLGUI
 		if(!pIE)
 		{
 			ls.pushNil();
-			nlerror("getCurrentWindowUnder(): No UICaller found. return Nil");
 		}
 		else
 		{
@@ -1672,7 +1671,7 @@ namespace NLGUI
 		ls.registerFunc("runFct",    runFct);
 		ls.registerFunc("runCommand",    runCommand);
 		ls.registerFunc("getPathContent", getPathContent);
-		
+
 		// Through LUABind API
 		lua_State	*L= ls.getStatePointer();
 
diff --git a/nel/src/gui/lua_manager.cpp b/nel/src/gui/lua_manager.cpp
index 31f2a4450..7034f6b7e 100644
--- a/nel/src/gui/lua_manager.cpp
+++ b/nel/src/gui/lua_manager.cpp
@@ -70,7 +70,17 @@ namespace NLGUI
 		}
 		catch( const ELuaError &e )
 		{
-			nlwarning( e.luaWhat().c_str() );
+			#if !FINAL_VERSION
+			nlwarning("--- LUA ERROR ---");
+			nlwarning(e.luaWhat().c_str());
+			std::vector<std::string> res;
+			NLMISC::explode(luaScript, std::string("\n"), res);
+			for(uint k = 0; k < res.size(); ++k)
+			{
+				nlwarning("%.05u %s", k, res[k].c_str());
+			}
+			nlwarning("--- ********* ---");
+			#endif
 			return false;
 		}