diff --git a/EXE_MachMgr.cpp b/EXE_MachMgr.cpp
index f676ac5..a3fff0d 100644
--- a/EXE_MachMgr.cpp
+++ b/EXE_MachMgr.cpp
@@ -2776,10 +2776,20 @@ ExeEstimate( const string& sEstFile, const string& sInfo)
 
 //-----------------------------------------------------------------------------
 bool
-ExeSimulate( int& nErr, std::string& sError)
+ExeSimulate( int& nErr, string& sError)
 {
    IMachMgr* pMachMgr = GetCurrMachMgr() ;
    VERIFY_MACHMGR( pMachMgr, false)
+  // forzo aggiornamento
+   if ( ! ExeApplyAllMachinings( false, false, sError)) {
+     // assegno il codice di errore
+      nErr = SHE_INIT ;
+     // assegno stringa di errore
+      sError = "Starting simulation failed" ;
+      ExeOutLog( sError, 1) ;
+     // esco
+      return false ;
+   }
   // inizializzo lo stato
    bool bContinue = true ;
    nErr = SHE_NONE ;
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index 0dc7393..6e11ee5 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ