Update: I'd say this is a serious bug, because I got it to happen again in Time Attack. (with the exact same EIP as last time, at that) Basically, if you witness the platform crumble on-screen, it's gonna crash.EIP=004a770e
This lovely sigsev struck when I had the curiosity to find out just what Brak Eggman does to make the center platform go away, and jumped up to see. The instant he destroyed it, crash. Single player, 1280x800 resolution.
Intangible FoFs + Friction of any type = Broken. :<
This worked in 1.09 I believe, it should be fixed for 2.0.5/.1.