Recently had computer lock up during shut down. When attempt to open any Adagio (AR, AP, GL or IN all current versions incl Service Packs) Message "program has recently been updated...workstation files must be updated..." This is a local stand alone machine no network- Win98. Reinstalled IN from CD- no problem, data integrity checked OK. Reinstalled AR latest CD - "error in serial number or install code (3)reinstall product" I'm quite certain this is latest CD I have from Upgrade Plan & correct SN & code. Tried several more times same error. Any suggestions on correcting this?