Logon to the print server with Administrative priviledges.
Close the Printers Folder. In Control Panel / Services, browse to the Spooler
service and stop it.. If you are using TCP/IP Printing Services, stop it also.
Delete the .spl and .shd files from %SystemRoot%\System32\Spool\Printers that
have the approximate time and date of the print job causing the problem.
Restart the sevices that you stopped.