SOLVED: Thank you ulaoulao! All I had to do was go into Dolphin 3.5 and go to Options->Configure->Gamecube and set Port 1-4 to Standard Controller and it works.
I have Windows 8.1 and I have tried using Dolphin 3.5 and Dolphin 4.0.2. Nevertheless I cannot get a second controller to work. When I am in the GCPad settings and I load the profile I used on my Windows 7 PC it reads since the red buttons light up on the GCPad window and the joystick does read. But in game when I play Mario Kart I cannot select a character for player 2. Player 1 controller works fine! Also I am using a Xbox 360 wireless receiver and two Xbox 360 wireless controllers.
EDIT: I also tried using the keyboard and mouse as an input for player 2 and player 1 as an controller. Player 1 works but player 2 still doesnt work. Which means its not the controllers acting up.
I have Windows 8.1 and I have tried using Dolphin 3.5 and Dolphin 4.0.2. Nevertheless I cannot get a second controller to work. When I am in the GCPad settings and I load the profile I used on my Windows 7 PC it reads since the red buttons light up on the GCPad window and the joystick does read. But in game when I play Mario Kart I cannot select a character for player 2. Player 1 controller works fine! Also I am using a Xbox 360 wireless receiver and two Xbox 360 wireless controllers.
EDIT: I also tried using the keyboard and mouse as an input for player 2 and player 1 as an controller. Player 1 works but player 2 still doesnt work. Which means its not the controllers acting up.
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