While reading some posts on the subject, I came across one that said any installer installed before Saturday will not work. I don't know why, they may have elaborated, but I didn't finish reading the post, or the responses to it. On it's surface, it doesn't really make sense, why would they allow people to pre-download the installer if said installer wasn't going to work on the 14th?
Anyway, long story short, I un-installed my old installer, and re-dl'd it from my account page, and wala. I'm installing the game as we speak.