I seem to have screwed up my Magic World modpack, and want to reset the whole thing to the default mods and settings. After that point I'll re-add the mods I want to add to it. It would be nice if the FTB launcher allowed us to clone instances like MultiMC does. That way we can just leave the original alone and make a copy to alter. As it is now, when I try to restore it to the defaults, the game still crashes when trying to make a new world. How do you fix this?