signal SIGSTOP, code <num>

  Explanation:  A 'stop' signal was  raised  as  an  exception  in
  response  to  the  arithmetic or software condition specified by
  the given code.  This exception is not expected to  occur  since
  the SIGSTOP signal cannot be caught.

  User Action:  Eliminate the cause of  the  error  condition  and
  retry the operation.