The game no longer opening. I have a legit copy, yet it's suggesting otherwise. Customer support down until Monday, as well. Ripping.
If you have a programme called Threatfire do the following:
This is related to a program called Threatfire - we very much recommend uninstalling this to definitely run the game. We're looking into a way around this, but currently due to a conflict with Steam this is the only way to resolve the issue.