Have you looked in the err.log file to see what is says? May have a clue in there for you.

>I just loaded VFP 7.0 on my new desktop operating Windows XP Home. I also installed the VFP Service Pack1. For awhile VFP worked fine. But now I whenever I try to type a “method” line of code e.g., thisform.cashpur(), I get the Error Message:
>“Fatal Error: Exception code = c000005@12.20/05 02:48:00 C:Program File\Microsoft Visual FoxPro\VFP7err.log
>I unloaded VFP and reloaded it and reinstalled the patch & got the same results.
>What can I do to fix this problem? Dead in water right now!