GC Adapter Detected. Controller not showing up.

[sotnocks]

So I've been following the tutorial for configuring the GC USB adapter on the dolphin website. The driver is installed, the adapter is detected in the controller settings, I've checked direct connect and restarted, and my controller is definitely plugged into the first slot. Unfortunately, when I try to configure the standard controller, Dolphin only seems to recognize the keyboard. I've tried multiple drivers and different GC controllers and different versions of dolphin (currently using 4.0-8548) but I can't figure it out. Please help.