Hello. I just got the game yesterday and tried to update it today and I don't know what to do. When I tried after giving my email it says my registration information is invalid and it may be my email or serial number. How do I change the email part? It also asks below if I want to purchase a registration? I have to pay after buying a game just to get it updated? I'm confused and what are these tokens? Excuse me if these sound like idiotic questions becuase I'm used to Civilization 4 which does the updates clean and simple, not like this which is irritating.