In the VFP 3.0 command window type COMPILE FORM formname.

The only thing that changes when you open the form in VFP 5.0 is the compiled method code. Re-compiling in 3.0 should allow you to use the form again.

>I opened a form which should be a VFP3 form in VFP5. Is there a wqay to convert it back to VFP3? Man! I hope there is...