Yeah, I tried as well on my Mac and XP machine. The solution is uninstall Vista and burn your Vista CDs.
No, seriously, we'll try to keep figuring this out.
Really, if someone can try the steps in
Dan Theman's post, that's probably the next best step. The fact that the same league file works for some people, and not others, points to some sort of conflict going on your machine, so we really need to focus on that.
I heard from someone else recently running Vista, who said that specifically excluding the OOTP directory from his antivirus program made the game go from constant crashing to no crashing. It certainly wouldn't hurt to try that.
Thanks, all!
Steve