Hi ive never done it the way youve done it try doing it with windows When the rpi2 and your windows pc is in the same network (lan/wlan doesnt matter) you can put the roms on the pi over the network. the pi will show up as "Recalbox" in that networktab in windows. When you open it all the rom folders are shown ("N64, Snes, PSX" etc) After inserting all the roms restart the pi and test it. It should work. Also check if the roms are okay --> test them first in windows greetings
Sorry for the late answer yes its only in the N64 Emulator PSX for example is working without problems Greetings from Germany 
in the meantime i tried some other USB Controller (Saitek and a PS3 controller) also with those controller i had the same issue ill just wait patiently for new changelogs thanks for your hard work i know its a lot of work
Hi guys I have two xbox 360 controller (a wireless one and a wired one). The Problem is that i can just use one at a time. So for example if I wanna play a Mario Kart N64 2 player game only one Contorller works. Both Controller are configured in the setupmenu and dedicated. Can someone help me? Sorry for the english Greetings