Just got back from buying this, installed it and tried entering the serial key. But when I start the game it says it is invalid.
I've tried all manner of ways of entering it, capaitalised, non capaitalised, with the dashes, without the dashes, spaces, etc but it won't accept it. When I restart the configuration the serial key is always empty, not sure whether that is because it has removed what it thinks is invalid, or whether not saving it is the problem?
Any one able to help?