Sounds like your form got corrupted. Make a copy of the form and try to open it as a table and pack it. After that issue COMPILE FORM myform. If this doesn't help, pull copy of the form from backup, if you've one.

>Dear Friends,
>
>Suddenly i started receiving these error. Only when i executed a program or open the form second time in a VFP session.
>*********************
>Error while running a program
>*********************
>Do mis (Program File calling a form with the name MIS )
>
>
>Results in this error.
>Fatal error: Exception code=C0000005 @ 11/03/2003 11:32:01 AM. Error log file: C:\Program Files\Microsoft Visual FoxPro 7\vfp7err.log
> Called from - mis line 34 {d:\misindent\mis.prg c:\documents and settings\administrator\desktop\misindent\mis.fxp}
>
>******************
>Error while opening a forn in design mode
>******************
>modi form mis
>
>Fatal error: Exception code=C0000005 @ 11/03/2003 11:33:09 AM. Error log file: C:\Program Files\Microsoft Visual FoxPro 7\vfp7err.log
>
>Any suggestions
>
>Aashish