So, I came back to the game after leaving it alone for a month or so, and noticed all my DLC was missing. Steam still says that I purchased them, but my dlc folder is completely blank. I'd be interested to know how this happened, but really I'm just trying to get the content back. Is there some way to re-download them all from Steam, or do I need to install the program all over again? Will re-installing erase my saved game files?