Cant connect to live!

This is a really great game, especially its relative Spartan Assault, but for some reason it cant connect to Live. I have an account and everything but it doesnt recognize it for some unknown reason. Its really pissing me off I cant get the achievements I cant show it in my friends faces. Fix as soon as possible. Oh and its doing the same for assault, fix that too.

free4all9_18 about Halo: Spartan Assault