In VFP6 project, I have made a couple of minor amendments to a form. i.e. adding a button, and a new page within a page frame. I checked page numbering etc, before saving.

Now when trying to launch the form to do more work, I get the following message:
"Expression evaluated to an illegal value". I have tried Refreshing, and Clean up project, but to no avail.

Has anyone got any suggestions, or do I go back to my last back up?

Thanks, Pete