diff --git a/EgtGraphics.rc b/EgtGraphics.rc
index 1a1a9a6..0fa5944 100644
Binary files a/EgtGraphics.rc and b/EgtGraphics.rc differ
diff --git a/SceneBasic.cpp b/SceneBasic.cpp
index 600f5a6..9090e3f 100644
--- a/SceneBasic.cpp
+++ b/SceneBasic.cpp
@@ -39,7 +39,7 @@ CreateEGrScene( void)
 {
   // verifico la chiave e le opzioni
    if ( ! TestKeyForEGr( GetEGrKey(), 0, GetEGrLogger()))
-      return false ;
+      return nullptr ;
   // creo l'oggetto
    return static_cast<IEGrScene*> ( new(nothrow) Scene) ;
 }