>VFP is not allowing me to debug my apps. If I put a set step on, or a breakpoint in a program, it opens up the debug window (like it's supposed to). But all I get is "Source not available". I deleted the .FXP's just in case and tried it again. Same thing. I re-installed VFP. Same thing. Then I just created a new program and copied the old program's contents over and ran it that way. It worked! Once. Then I get the above error again.
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>Any thought or comments would be GREATLY appreciated at this point. BTW, I had been using SP3 when this started and just installed SP4.

VFP can't get into its actual source (forms, prgs). Also, make sure that you are not running an exe. This happens by running the main program with an equivalent exe file. Delete your exe file to be sure.