So my Sixaxis Controllers are not behaving well anymore. In the previous test builds, they were both mapable and usable, but now there's a problem on Release Candidate 5 (not sure when the problem first started):
I have 2 controllers connected via the Sixaxis Controller app.
If I enable only player 1's controller in Mupen, then that controller works just fine. However, the second controller still works as a duplicate of the first controller (i.e. both controllers control player 1).
If I enable player 1 AND player 2's controllers in MuPen, I am able to use either controller to map buttons in the settings page. Also note that the controllers are recognized differently in the multiplayer mapping page under the Play menu (one of them is identified as "Device 11 (Gamepad 0)", and the other is identified as "Device 12 (Gamepad 1)". HOWEVER, neither controller works while playing a game. This is true whether I map none, one, or both controllers in the Multiplayer mapping page prior to starting the game.