When i load up the world i started a few days ago, it goes through the loading process, only to leave me in an empty world. I can fly, but can't go any higher than the level i'm on, i can't move or place blocks and the only thing i can see is the sky. Please help, this is only happening on that one world. I could just start a new world but i have spent time on this and am not ready for it to be over yet.