I use these boxes all the time, but no matter if i go into the pallete select menu to turn them on the screen flickers a little but they never appear
no problem using other palletes, just these 2, and only in this machine
its been doing it for a while now and is quite frustrating.
They may have ended up off screen. You might try a different Palette Scheme in the Work Environment, or changing your screen resolution, to see where they are. Some forum members that use Vista may have some other ideas.