I pre-ordered a disc copy of Rome II and received it today. When I went to install (after some initial problems logging in to Steam) it let me enter my activation code and click next to go the install screen, but instead of allowing me to install the game it just says "This game cannot be installed" and won't advance any further. I have to hit cancel installation to exit. Does anyone know what is going on here? I've seen a couple others list the same problem.