I got the Super Gameboy logo to show up with rom paths and everything but lr-mgba wont save configurations... I give up.
EDIT: I got this form dev>shm>runcommand.log after changing an option in lr-mgba and resuming gameplay, what does it mean?:
Parameters:
Executing: /opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-mgba/mgba_libretro.so --config /opt/retropie/configs/gbc/retroarch.cfg "/home/pi/RetroPie/roms/gbc/1942 (USA, Europe).zip" --appendconfig /dev/shm/retroarch.cfg
/opt/retropie/supplementary/runcommand/runcommand.sh: line 1012: 1132 Segmentation fault /opt/retropie/emulators/retroarch/bin/retroarch -L /opt/retropie/libretrocores/lr-mgba/mgba_libretro.so --config /opt/retropie/configs/gbc/retroarch.cfg "/home/pi/RetroPie/roms/gbc/1942 (USA, Europe).zip" --appendconfig /dev/shm/retroarch.cfg
