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this is may help. https://discussions.apple.com/message/26889010#26889010
sry, i still crash. finally i renew my mac book to mavericks. it's ok. and i try to upgrade to yosemite. it's crash again. cheer martdob.
thanks for your answer, i try to do your list but i not found ULF in "Library/Application Support/Unity" (i think because i had delete all file...
I just upgrade OS X from mavericks to yosemite and then my unity 4.5.4 can't open. so i upgrade unity to 4.5.5. it's still the same problem with...