Just updated to the latest update, and now I can't use the Undo or Quit. When trying to quit the program is asking if I want to save, and when clicking on any of the options it still does not quit, (Save - just saves but will again ask if I want to save when I try to quit. Cancle do nothing, Don't Save will still not allow me to quit). When I force quit the same problem accours next time when I open the file. Sometimes the file is not saved and all work is gone. Any suggestion?