>I'm using VFP5.0a with SP3. I also do not have a Editbox and I do not manipulate the SelStart or SelLength properties. Any ideas ??

Just two, neither of which will likely be helpful:
1. Are you sure you are placing the controls in a page in the pageframe, rather than *on* the pageframe?
2. Have you duplicated the problem on another machine with a different video card?

Otherwise, I'm stumped. Sorry.