>>I was able to create an exe fine a few months ago. I recently added another form and table. Every form in the system has the app_mediator. I also changed pcs and reinstalled VFP6. Now when I recreate the exe and click on any form with the app_mediator, I get the error message.
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>Drat. Did you reapply service pack 3? (that's a certified WAG, BTW :)

No, I didn't. Maybe that will work. Keep you fingers crossed!