Re: "Source not available" -- seems to happen in the history of the list!

I get similar issues sometimes. It's always paths or old FXP files without debug info in them.

Are the PRG files built into the EXE via the project ?

Do you have 'set classlib to progs_bizobj.prg additive' somewhere at the setup of your application? I find it's best to be explicit rather than relying on search paths to find it.

Have you tried building an APP instead of an EXE and running that in VFP?