>Are you doing Report Preview??

No, but here are some steps to reproduce the error:

1) Bring up FoxPro 5.0
2) From the Start Menu, bring up word pad
3) Switch back to FoxPro 5.0
4) Select Open... from File menu

Doing the open works if done after step one. I am going to get VFP 5.0a and see if that fixes the problem.