I have discovered the error lies with Chroma Hills being installed. If I load a world using other texture packs I have zero issues. But if I install Chroma Hills and try to play, ever save crashes and causes the corrupt save. The only prevention for now is to just not use Chroma Hills. I have messaged Scyclone on both Twitter and FB and they have yet to get back to me
I am also having this issue. I can't load old worlds, I can't create new vanilla or flat worlds. I don't have anything turned on like add-ons or texture packs.