I am trying to install the 10.18 upgrade on my PC's with version 10.11 on them. The upgrade installed without problem on my Win NT 4.0 without a problem. Both of my WIn 98 PC's start the installshield and then I get a severe error message saying that V10 is not installed on the PC. V10.11 is installed and will run. Any help would be appreciated. Thanks. Herb herbr@netcom.com -- WWW: http://www.writelog.com/ Submissions: writelog@contesting.com Administrative requests: writelog-REQUEST@contesting.com Problems: owner-writelog@contesting.com