[Wild.Bill.Kelso]

Have you tried just using a non-transparent button on the transparent tab to see if that will work? I think you are trying to do something we did not thing of when testing TB. But I would start with a transparent tab, and use a normal button and see if that works. Then, I would try a button that is just partially transparent to see if that works. Maybe just a transparent button with a visible X on it? Then try a totally transparent button.

Also, I would turn on the button borders option so you can see where the button is. TB should draw an outline around the button. That would help to know if TB actually knows that you have a button there maybe?

WBK