I have not had this problem, but some of the recent patches have been disappointing, while fixing some issues that I had already worked around in the editor, they seem to have made my game less stable, so I went back to the older version and kept my workarounds so that I can at least play the game. Therefore, if you are having this problem, it is something to do also with a newer patch..I will let anyone here with the new patch respond to that.