Did some digging again today: So as soon as i select my friend as Wiimote1 in "Configure Pads" the game won't start.
If i configure 2 emulated wiimotes and select myself for both Wiimote0 and Wiimote1 it works fine and i can play both characters, but he can't do anything.
If i configure 2 emulated wiimotes and select myself for both Wiimote0 and Wiimote1 it works fine and i can play both characters, but he can't do anything.