Before you try to convert, do a Compile of your application in Access 97.
Open any code module (or open the Debug Window, using Ctrl-G, provided you
haven't selected the "keep debug window on top" option). Select Debug |
Compile and Save All Modules from the menu bar. Access will stop at the
first error it finds. Resolve that error, and continue running Compile and
Save All Modules until no more errors are uncovered.