Today, I was in my Last Millennium world, doing thaumcraft stuff, and I had to go afk for a minute or two. When I came back, everything in my world was un-usable. I couldn't open chests, couldn't click the portal to the overworld, etc. I decided that it might have just been a little glitch, so I exited minecraft. I tried to launch the game, that worked, I clicked the world, that worked, but the world never loaded. I saw something in the console about iron backpacks, and I tried removing it, and down grading it. Neither worked. I tried a bunch of different things, but nothing is seeming to work. The world just simply isn't wanting to load up. What happens is, when I click the world, the console says some stuff, and it stays on the main minecraft menu. Here is the console up to the point where it stays on the main screen : http://paste.ubuntu.com/13296735/