So I just go the new Aether II 1.5.2 verison from their offical facebook page, and they said to back up the worlds incase they f-up. And yes, they f'd up lol. It's okay for me though becuase I still have a backup, but I when I went into my world it was just really laggy and tons of random chests and bronze door key blocks everywhere. I even had a dungeon entrance block in my inventory. Haha I was wondering if I wasn't alone and if this happened to anyone else??