How long does the icon persist (or bounce) in the dock? Does initialization occur, and if so, how long is there a visible window? Do you have other MarbleBlast Gold copies you can try running to test to see if it works?
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Here are some facts I'd like to point out. For one, MarbleBlast on Mac OS X, when you click Reopen, has in the past for me caused MarbleBlast to launch with default settings. I'm not sure how it actually works, but it seems MarbleBlast (maybe??) ignores files such as the Library and executes with less "stuff" which may potentially bog down (and crash) MarbleBlast. I've noticed, for MBP 1.20, that it would suddenly be able to get the MotD, as if it had won a race condition. That said, it may not have played well with MarbleBlast Powered-Up's "launcher", an executable which is normally invoked to provide some support. Something unusual coming as a result of this may in turn affect MBG. I'd have to look into that more, if that were the case.
HiGuy is also correct, but a DSO instantly crashing MBG would be rather peculiar.
It would assist us if you could possibly zip and upload a copy of the MarbleBlast folder present in the Library. Even though MBPU shouldn't be writing to the Library anymore, the fix he used to stop MBPU from writing there could have bugged. Maybe another mod could have as well. When was the last time MBG successfully ran?
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