Spool 32 Kernel32.DLL at 016f:bff769a6

The above error message was encountered by a user printing from a HP LaserJet 4050, a similiar errror Module Kernel 32.DLL at 016f:bff7b9a6 was encountered by a user printing from a HP LaserJet 4L. Searched all known Knowledge Bases to determine cause and remedy to this specific problem which results in the machine “locking up” and only a reboot seems to be the only remedy to fix the problem.

Any ideas on cause and cure…Thanks