hardcore zombie survival

So I have been getting an issue with NEI crashing whenever I go and lookup a recipe, this may have been caused by a corrupted file on my end or a mod causing issues, but i still removed 3 mods anyway because they were somewhat obsolete (adventure backpacks was removed because iron backpacks is preferable in my case, fastcraft because you can just install optifine and use shaders, and rottenfleshtoleather because it was simply pointless when it comes to basically anything for this modpack)