Ok, let's try this again.
Still: Whenever I try to run the game, I get a black screen, the gauntlet curser, and the intro music and that's it. No button makes anything happen and the only way out is a force quit.
System Specs
Processor 3.33 GHz Quad-Core Intel Xeon
Memory 6 GB 1066 MHz DDR3 ECC
Graphics NVIDIA GeForce GTX 660 2048 MB
Software OS X 10.8.5 (12F2501)
Apparently there is no Player.log file or even a Unity folder in ~/Library/Logs/ created.