I am having some strange issues with MXJ since upgrading to Snow Leopard. Basically, almost any static calls to MaxSystem.* simply never complete, and give no error messages on the Console.app or in the max window. I’ve tried to catch exceptions and just can’t find anything.
Well, I finally solved it. Turns out that a copy of the 4.6 max.jar and jitter.jar were in the /Library/java/Extensions folder. No idea how they got there, but they were the culprit. Thanks to JKC for the tips.