Did you try "End Task" via "Windows Task Manager" ? (W2000 ... don't know if XP has the same animal).

>Win-XP Home
>
>In some testing involving some Spinner controls I mucked up the allowable high/low values such that an error was emitted saaying the allowable range was 667-663.
>Trying any of those numbers didn't work, so I needed to quit. I couldn't.
>
>Even telling Task Manager to Shutdown didn't resolve the problem - just causing the error message to emit again!
>
>Even multiple ctrl-alt-del actions didn't do it.
>
>So how does one quit VFP in such a circumstance short of hitting power-OFF.