diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index 7af91b7..a9ca0ce 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/GdbGroup.cpp b/GdbGroup.cpp
index eab09a2..2fd6dea 100644
--- a/GdbGroup.cpp
+++ b/GdbGroup.cpp
@@ -97,8 +97,8 @@ GdbGroup::Clone( int nId) const
    pGdbGroup->m_nId = nId ;
    m_pGDB->m_IdManager.UpdateMaxId( nId) ;
   // aggiorno eventuale UserObj
-   if ( m_pUserObj != nullptr)
-      m_pUserObj->SetOwner( nId, m_pGDB) ;
+   if ( pGdbGroup->m_pUserObj != nullptr)
+      pGdbGroup->m_pUserObj->SetOwner( nId, m_pGDB) ;
 
   // assegno il riferimento al DB geometrico
    pGdbGroup->SetGeomDB( m_pGDB) ;