I just realized I had the EE on my Steam library, and when I download it it takes barely a few minutes and doesn't download any files. Then when I try to run it, it says it can't find the Executable.

I thought it was because I didn't have the main game installed, but that wasn't it.

Is there a fix?

I'm running Vista, which might be the reason, but I don't see why it would considering the base game runs just fine.