signal SIGURG, code <num>

  Explanation:  An 'urgent condition'  signal  was  raised  as  an
  exception  in  response  to the arithmetic or software condition
  specified by the given code.  SIGIOINT (printer to backend error
  signal) is another name for this signal.

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