make sure we start as nsm clean

qtgui/mainwindow.py

@@ -123,6 +123,10 @@ class MainWindow(TemplateMainWindow):
         #Now all tracks and items from a loaded backend-file are created. We can setup the initial editMode and viewPort.               
         self.scoreView.updateMode() #hide CCs at program start and other stuff
         self.scoreView.scoreScene.grid.redrawTickGrid()  #Init the grid only after everything got loaded and drawn to prevent a gap in the display. #TODO: which might be a bug. but this here works fine.
+
+        #There is so much going on in the engine, we never reach a save status on load.
+        #Here is the crowbar-method.
+        self.nsmClient.announceSaveStatus(isClean = True) 
             
     
     def zoom(self, scaleFactor:float):