all previous INIs cant boot any games until you add those lines:
For fceugx, genplusgx, wii64, snes9xgx, vbagx and wiimednafen add:
"arguments={device}:/{path}|{name}|{loader}"
For mplayerce and not64 (havent tested yet) add:
"arguments={device}:/{path}/{name}"
And for scummvm add:
"arguments={name}"
You can also remove the "ReturnLoader" line from the INIs.
Any magicword for scummvm and mplayerce is accepted now, just
make sure in scummvm the "romdir" is still "scummvm.ini".