I did experience the same error on a similiar machine creating a
very small .exe consisting of only one top level form.

The error does not occur ommiting the SCREEN=OFF line in the
config.fpw.

>After installing SP3, I've had major Win98 lockups related to vfp6 - worse than Blue Death Screen, just a total lockup, where the PC has to be switched off/on. Just before lockup, a messagebox "Explorer has performed an illegal operation..." This is a fairly new 450/128 machine, and this problem didn't exist before SP3...
>
>This seems to occur when I run a vfp6 app, then close vfp6, then try to re-open vfp6 later, though sometimes while during a session. By (painful rebooting :) trial and error, it seems to be caused by CLEAR ALL at the end of app's main prg. I believe this is related to a similar C000005 error before SP3, except now the result is even worse :)
>
>Anyone else seen this yet?