I downloaded and installed FF2 fresh today.
I'd cut&paste the version info but it won't let me
Doesn't seem worth a screen shot
Here's a retype:
Build: Filter Forge universal 2.002.15268.19170 Release-10.5, December 18, 2009, 13:44
I've no idea what went wrong with the install, or why, but here's an experiment for you to try: remove permission to your entire /Application Support/Filter Forge 2 directory and see what happens when you run Filter Forge!
Hmm, rereading my post I'm not sure I was totally clear: I resolved my problems by adding permissions, and am now happily using Filter Forge 2.002 -- seems to be working fine!