diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index 0ca4a04..b3451d7 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ
diff --git a/LUA_General.cpp b/LUA_General.cpp
index 50e00dc..154706f 100644
--- a/LUA_General.cpp
+++ b/LUA_General.cpp
@@ -586,14 +586,14 @@ LuaFileDialog( lua_State* L)
       OPENFILENAME ofn ;
       ZeroMemory( &ofn, sizeof( ofn)) ;
       ofn.lStructSize  = sizeof( ofn) ;
-      ofn.hwndOwner    = ExeGetMainWindowHandle() ; // FindTopWindow() ;
+      ofn.hwndOwner    = ExeGetMainWindowHandle() ;
       ofn.lpstrFilter  = LPWSTR( wsFilter) ;
       ofn.lpstrFile    = LPWSTR( wsFileName) ;
       ofn.nMaxFile     = MAX_PATH ;
       ofn.Flags        = OFN_DONTADDTORECENT | OFN_PATHMUSTEXIST ;
      // Visualizzo il dialogo 
       if ( bOpenVsSave) {
-         ofn.Flags |= OFN_FILEMUSTEXIST ;
+         ofn.Flags |= OFN_FILEMUSTEXIST | OFN_HIDEREADONLY ;
          if ( GetOpenFileName( &ofn) != FALSE)
             LuaSetParam( L, wstrztoA( wsFileName)) ;
          else
@@ -1002,7 +1002,7 @@ CALLBACK DialogBoxProc( HWND hwndDlg, UINT message, WPARAM wParam, LPARAM lParam
          POINT ptLR{ rcLR.left, rcLR.top} ;
          ScreenToClient( hwndDlg, &ptLR) ;
         // centro e scalo il dialogo
-         int nNewH = rcLR.top + 2 * OFFS_CTRLS ;
+         int nNewH = rcLR.top - rcOwner.top + 2 * OFFS_CTRLS ;  // non chiaro perchè va sottratto rcOwner.top ma funziona sempre
          SetWindowPos( hwndDlg,
                        HWND_TOP,
                        ( rcOwner.left + rcOwner.right - ( rcDlg.right - rcDlg.left)) / 2,