Mine works ok: [url=http://sdrv.ms/1eVyklP]n64 Theme[/url]
In: /home/pi/.emulationstation/es_systems.cfg
DESCNAME=Nintendo 64
NAME=n64
PATH=/home/pi/RetroPie/roms/n64
EXTENSION=.z64 .Z64 .n64 .N64
COMMAND=cd /home/pi/RetroPie/emulators/mupen64plus-rpi/test/ && ./mupen64plus %ROM%
PLATFORMID=3
Theme lives at: /home/pi/.emulationstation/n64/theme.xml
