>I'm using vfp 6.0 sp2.

GET SP3. SP2 didn't have any VFP specific fixes in it.

>My toolbars (form control and layout) seem to become uphappy after they've been docked for awhile and change back to floating or disappear altogether. Ususally after an error when I run a form.

You need to fix the root cause of the forms errors first.
In your toolbar in the undock event put this.dock(0) to redock the bar.