Corey
I get the impression that your game has been without problems until recently.
Have you installed any new EP's or CC recently?
I have not seen your specific problem myself, however, I would try a "Factory Reset" (see stickies above) first. It frequently fixes errors as it restores the game to they way it was before the error occured. It doesn't take long, but, you will need to save backups of any game files you want to keep before doing it.