diff --git a/Disposition.cpp b/Disposition.cpp
index e126a10..0984588 100644
--- a/Disposition.cpp
+++ b/Disposition.cpp
@@ -1353,7 +1353,7 @@ Disposition::SpecialApply( bool bRecalc)
    bOk = bOk && pMch->LuaResetGlobVar( EMC_VAR) ;
   // segnalo errori ed esco
    if ( ! bOk  ||  nErr > 0) {
-      m_nShifts = - 1 ;
+      m_nShifts = -2 ;
       string sOut = sMsg ;
       if ( IsEmptyOrSpaces( sOut))
          sOut = "  Error in " + ON_SPECIAL_APPLY + " (" + ToString( nErr) + ")" ;
@@ -1393,7 +1393,7 @@ Disposition::SpecialUpdate( void)
 
   // se disposizione vuota, esco
    if ( m_nShifts <= 0) {
-      if ( m_nShifts < 0)
+      if ( m_nShifts == -2)
          m_pMchMgr->SetWarning( 2052, "Warning in Disposition : No shifts") ;
       return true ;
    }
diff --git a/Disposition.h b/Disposition.h
index 8f0b7e3..7ce4cd9 100644
--- a/Disposition.h
+++ b/Disposition.h
@@ -56,14 +56,14 @@ class Disposition : public Operation
                { return true ; }
       bool Save( int nBaseId, STRVECTOR& vString) const override ;
       bool Load( const STRVECTOR& vString, int nBaseGdbId) override ;
-
+      
    public :                           // Operation
-     int  GetType( void) const override
-              { return OPER_DISP ; }
-     bool IsEmpty( void) const override
-              { return ( m_nShifts == 0) ; }
+      int  GetType( void) const override
+               { return OPER_DISP ; }
+      bool IsEmpty( void) const override
+               { return ( m_nShifts == 0) ; }
       bool UpdateStatus( int nModif) override
-              { m_nStatus |= nModif ; return true ; }
+               { m_nStatus |= nModif ; return true ; }
 
    protected :                        // Operation
       const std::string& GetToolName( void) const override ;
@@ -71,7 +71,7 @@ class Disposition : public Operation
       int                GetExitNbr( void) const override ;
       const std::string& GetToolTcPos( void) const override ;
       int  GetSolCh( void) const override
-              { return 0 ; }
+               { return 0 ; }
       bool NeedPrevHome( void) const override ;
 
    public :
@@ -111,6 +111,8 @@ class Disposition : public Operation
       bool GetToolData( std::string& sName, std::string& sHead, int& nExit, std::string& sTcPos) const ;
       bool GetSomeByHand( void) const
                { return m_bSomeByHand ; }
+      bool IsWithTool( void)
+               { return ( m_nShifts != -1) ;}
 
    private :
       bool InsertMoveInfoInList( int nRawId, int nType, const Point3d& ptP, int nFlag) ;
diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index 27a04f5..a1ef62e 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/Processor.cpp b/Processor.cpp
index b04a865..914daec 100644
--- a/Processor.cpp
+++ b/Processor.cpp
@@ -184,8 +184,8 @@ Processor::ProcessDisposition( int nOpId, int nOpInd)
    bool bEmpty = pDisp->IsEmpty() ;
    bool bSomeByHand = pDisp->GetSomeByHand() ;
 
-  // Se disposizione con movimenti macchina
-   if ( ! pDisp->IsEmpty()) {
+  // Se disposizione con movimenti autonomi e utensile associato
+   if ( ! pDisp->IsEmpty()  &&  pDisp->IsWithTool()) {
      // Recupero l'utensile della disposizione corrente
       string sTool ; string sHead ; int nExit ; string sTcPos ;
       if ( ! pDisp->GetToolData( sTool, sHead, nExit, sTcPos))
diff --git a/Simulator.cpp b/Simulator.cpp
index c71e09b..08d3a7c 100644
--- a/Simulator.cpp
+++ b/Simulator.cpp
@@ -687,11 +687,13 @@ Simulator::FindAndManageOperationStart( bool bStart, bool bFirst, int& nStatus)
             }
            // cambio fase
             m_pMchMgr->SetCurrPhase( nPhase, ( nPhase == 1)) ;
-           // aggiorno utensile e assi conseguenti
-            int nErr ;
-            if ( ! UpdateTool( bFirst, nErr)) {
-               nStatus = CalcStatusOnError( nErr) ;
-               return false ;
+           // se previsto, aggiorno utensile e assi conseguenti
+            if ( pDisp->IsWithTool()) {
+               int nErr ;
+               if ( ! UpdateTool( bFirst, nErr)) {
+                  nStatus = CalcStatusOnError( nErr) ;
+                  return false ;
+               }
             }
             ++ m_nOpInd ;
            // richiamo gestione evento inizio disposizione