Those of you recently having issues with the game will be pleased to know, by simply downloading the latest Nvidia drivers (381.89) you should be able to access the game.
For NVIDIA updates: http://www.geforce.com/drivers
Prior to the recent driver release (381.89) the last stable driver was 376.33. Drivers inbetween may experience issues.
Make sure also to reboot your system once your new drivers have installed.
Then verify your game cache.
Please contact www.rebellion.co.uk/support for any other queries.