The program 'pitivi' received an X Wind
This probably reflects a bug in the pro
The error was 'BadWindow (invalid Windo
  (Details: serial 24 error_code 3 requ
  (Note to programmers: normally, X err
   that is, you will receive the error
   To debug your program, run it with t
   option to change this behavior. You
   backtrace from your debugger if you