Sometimes when I create a drawing and try to insert a Model View (start command when creating new drawing is checked), I select an assembly that often I had just saved and closed prior to creating the drawing, SW thinks for a few seconds and I get a save dialog to save the (modified) assembly.  The one I just saved and closed?  How could it be modified?  Doesn't matter if I save or not, the view is not created.  Any one else experience this?  Fix?  It really triggers my Solidwork Induced Tourettes.

I don't need a work around, I just want to know why this happens.