I installed Gameboy Advance. When I go into it, the emulator starts, but it will not load from USB. My Snes9x loads the USB. I went into settings and told it to load from usb, and to load from vbagx/roms/. It says "unable to locate of load device" "usb drive not found". Why does the USB load in wiiware, wii games, super nintendo, nintendo but not VBAGX?