I ran into a problem with SP4, and found the fix. To generalize, I had a form that was originally compiled under SP3. This morning I needed to do some work with it and found that if the Debugger was open when the form was run, VFP crashed. After doing some playing around (including re-compiling) I found that, for some reason the problem was with the resource file. After zapping it, everything was fine again.
George
Ubi caritas et amor, deus ibi est