I don't know, John. I compiled an exe that ran an app which was located in a sub-directory, and I was able to view source code in the debugger for both modules. The exe and the app each consisted of a single prg, and 'Debug info' was marked in both projects. This worked fine in both VFP5.0a and VFP6 SP3. Have you tried rebuilding the exe and all the app's?

>That idea did pop into my mind late one night, but unfortunately it was set correctly. A further bit of info: scx's display properly in the debugger but not prg's. Let me know if that gives you any clues. A VFP5a anomoly (feature)? Thanks for chipping in.