Spool32 error w/ McAfee Updates

We are on an NT 4.0 WAN and using mostly 95/98 workstations. In December we updated our McAfee Virus Scan and Netsield Dat and Client. Since that time we have numerous (not all) workstations (mainly 95) that are receiving a spool32 error. We have contacted McAfee who has since developed a “fix” and we have installed them also. We still continue to have Spool32 errors. Anyone have a solution? Thanks