NPCs assigned MCC classes

[algnc]

I'm having an issue I can't figure out . I enabled MCC sheets, and for some reason it switches all the NPCs I've made to use the Mutant sheet instead of the default NPC one. I also made a monster with the NPC sheet (disabling the MCC sheet), and when I re enable it I can't get the monster sheet to open at all. The log gives me this error: foundry.js:4481 TypeError: An error occurred while rendering ActorSheetMutant 71: Cannot read property 'mutantHorror' of undefined
at ActorSheetMutant.getData (actor-sheets-mutant.js:19)
at ActorSheetMutant._render (foundry.js:4509)
at ActorSheetMutant._render (foundry.js:5157)
at ActorSheetMutant._render (foundry.js:16788)
at ActorSheetMutant.render (foundry.js:4479)
at ActorSheetMutant.render (foundry.js:5621)
at Token._onClickLeft2 (foundry.js:45397)
at MouseInteractionManager.callback (foundry.js:36392)
at MouseInteractionManager._handleClickLeft2 (foundry.js:36597)
at MouseInteractionManager._handleMouseDown (foundry.js:36559)
Some npcs I can still open, and switch them from mutant to npc, but some refuse to open and only throw errors.