I had something like this, but with VFP6. For some reasons VFP6 is incompatible
with a version of our HP840c printer driver. Since we uninstall the printer driver vfp worked fine.

Hope this help.


>Hi, gang...
>
>We appear to have a compatibility issue between a legacy app in VFP 5 and NT.
>
>The app runs fine under 95/98, yet intermittently generates Dr Watson or 'has generated errors and will be shut down' error messages when running under NT 4/Win 2000.
>
>There's no pattern to when it errors out.
>
>We're using the original VFP 5...never went to any bug releases of VFP 5, because we were always happy with the original.
>
>Has anyone run into this, and what did they try? For a variety of reasons, upgrading this legacy app to VFP 6 is probably not a possibility
>
>TIA,
>Kevin