I'm unsure why, but I started using the trial and when I rebooted the next day, all my explorer windows became transparent, window like. Here is a screenshot;

It happened with the dragon skin, I changed to this one and still broken. I had to change back to a normal standard skin, then it finally came back to normal background even going back to these skins. I can only assume when I reboot again it will become transparent, again. No matter what options I chose and kept trying to reload the theme, it stayed transparent. What would cause this?