I just got an account and downloaded the game. Every time I try to log in it says that the "installation is out of date, return to update and try again"
I can't figure out how to do what it wants. Please help!

Are you trying to run it from directly from the DMG? You should copy it to your hard drive first.

Got it! Apparently I didn't put it on my hard drive after all. Oops. Thank you!