So to be clear, instead of the command line argument saying "/bin/7z /usr/share/games/nes/kachikachi/CLV-Z-RNEOT/Wonder_Boy.7z", it should just say "/bin/sms"
I do have the cores installed including genisys_plus already from installing the RetroArch 0.6
I did try to use "/bin/sms" on the game...