They are quite compatible. Do you have the latest service packs for both NT4 and VFP5?

>My Win95-based computer was getting unstable so I've totally reinstalled NT Workstation 4 on this computer 'cause I use this setup at home with much stability.
>
>My VFP5 worked w/o problems for awhile but now I'm getting frequent "Dr. Watson" errors. It's only been 3 days since I've completely reinstalled everything on this machine!
>
>Anyone have any similar problems with found solution? TIA.