Can you go on your PS3 and see if the SNES9x core is in this exact location with the exact name. /dev_hdd0/game/SSNE10000/USRDIR/cores/RetroXMB/22.214.171.124/snes9x_next_libretro_ps3.SELF Also be very careful with these tyype of rom names. (everything is case and space senative) so just be sure those are correct libretro_rom_path = "/dev_hdd0/game/RXSNE0005/USRDIR/cores/roms/Super Metroid (JU) [!].smc" but the problem seems to be the wrong ROM defined in the ROM Path. This was from waffe and its trying to boot Super metroid. (which the ROM may not be in that location defeind to even boot Super metroid) OR the core is not in the right location and its unable to find it. Usually both occurrences will lead to a black screen.