Since downloading the DLC yesterday (Steam, PC), none of my controllers will work. The problem is not with the controllers, because they register both on my PC and they register and test successfully with Steam. 

I've tried different types of controllers, unplugging, restarting the game, steam, AND shutting down/restarting  my pc multiple times. I've also uninstalled and reinstalled the whole game. 

On the two point steam start page, it even says that my controller should work great. Help?