Okay, so here's the trouble:
I've just installed Ae Cs3 on Windows XP and every thing works fine until I try and change the font on a composition - then it beeps and then the whole thing freezes, or sometimes a little box comes up, and then it freezes. I then have to shut it down and restart it, and then, if I go anywhere near the font changer it does the same thing. So I can use it, but I can't change any fonts.
I have no idea what's wrong and there doesn't seem to be anything in the help guide about it.
Any help would be greatly appreciated, thank you!
See the signs for what they are: You have a crappy font on your system and it's messing with the Adobe type engine. Remove the offending font(s) and everything will work.