Walter,
I had severe problems using the WangImage.EditCtrl.1 (Image Edit Control) under Win NT 4 / VFP6 SP3. Placed on a form, the control works fine. But when the control is located on a pageframe page, the screen gets messed up. Though the control is placed on a page that is not the active page when the form shows up, it "flickers" to the top of the screen. After skipping through the pages some time it behaves like expected.
I've acquired quite a taste for a well-made mistake... [Fiona Apple]