Can't Compile BaseGameUtils.

I’m trying to create my first android application, and so far so good. I’m at the point I want to start adding the google services (Such as highscores and achievements). However, the few tutorials that there are laying around want me to use BaseGameUtil… Even the google homepage, but I can’t compile it.

I get 125 errors, and all of them are “Cannot be resolved to a type” and I have been sitting here for hours struggling trying to figure it out. If this is a library, why won’t they just provide it to us in .jar format to begin with, it’d be so much easier. I searched for a post-compiled version of the library, but couldn’t find one and this is literally stopping any development progress I had planned.

More Info: I have installed EVERY API VERSION in the SDK Manager, just as a last-chance solution, but it didn’t help.