Okay, so I use Riivolution for all of the brawl hacks, but for some reason whenever I try to replace either Flat Zone, Pictochat, New Pork City or Onett, it won't work. There are probably other stages but these are the ones I know for sure. Either no effect will have taken place or the stage is just a black abyss. Can anyone help or explain to me what's going on?