Figured it out. My anti-virus, Comodo, was "auto-sandboxing" the program. After creating an exception, the problem is solved. Thanks for the help!
I saw that was giving others problems, so I've tried launching it both with SLI enabled and disabled.
PA will launch just fine, but after launching a match during planet generation, the game crashes and throws a not responding error. See my DxDiag.txt...
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