Nintendont detects neither my DS4 nor a GCN controller through the Wii U adapter. I tried to update controllers.zip thinking that would help, and every single time I am given this (http://puu.sh/vZAGa/b8a92c1bd3.jpg) error instead. Any ideas what could be keeping my controllers from working, and indeed keeping me from updating my controller profiles?
Try without the controller file. Most should be supported natively. The Wii U Gamecube adapter should definitely work.