Yeah, graphics drivers are fully up to date - haven't tried messing with the config files though (wouldn't know where to start!)

Thats what I'm still seeing on Windows, but miraculously, the Mac version has decided to start working perfectly! Weird... Any ideas?[/img]

Sure, thanks for offering to help out with some advice, let me grab one -hang on.

Hi guys, I'd appreciate any help or advice you could give me - please bear with my description of the problem, but I'm stumped. I'm experiencing the same issue on both me Windows 7 (64-bit) system, and my Mac OSX 10.8.1 system. I recently bought a new computer and tried to install my retail version ...