I have bought GalCiv: Endless Universe a long time ago. I last played it on my Win XP Computer, without having nto connect to the Internet. Now I installed it on my Win 7 PC and updated it via Impulse. Every time I want to play it asks me now for my serial number, but when I enter it the game says it is invalid! What the fuck is up? I want to play the game, I payed money for it! So, could someone please tell me how I can get this shit to run?