When did you first install this program?Idk it was a while ago. It's been lurking on my computer for quite some time and I've just recently started using it. I have installed new fonts before but, when I did, it was for photoshop and it worked.
Did you update it since?
Have you installed anything new, since? Like fonts, new brush sets, or anything else that could possibly interfere with Photoshop?
(Also, why not just get CS4? lol)