Final Fantasy VI: Revised Old Style Edition

I've not looked at this hack (or any Wii emulators) but from the sounds of it either you used the wrong patch (headered ROM vs non-headered ROM) make sure you have a V1.0 ROM and not a V1.1

If all of that is correct, my last guess would be that the Wii emulator is just not compatable with things done in this patch. Certain "little" changes break all compatibility with some accurate emulators or just some emulators in general. If possible, attempt to run it from a PC using the most recent version of snes9x. If that works, then the Wii emulator just won't do it. If not, double check exactly what ROM your using.