Adagio service packs are only installable on top of programs with the same version number. The most current service pack for Adagio Payables is for the version 8.0A of Adagio Payable. This means that before you can install this service pack, you need to first install the initial 8.0A upgrade - using the link from the email sent to customers on a current support plan. Your company is, and the email was sent on Oct 19, 2005. If you don't have that email then contact Customer Service to resend the email to get the upgrade link and your specific installation codes.