Running windows xp with latest java 7. Kind of at a loss here as to how to recover my world. Spent many days on it, and i wish to continue playing on it. THe original crash happened right as i was transitioning from the overworld to the nether. I had not tried to go to the nether world before this. Now the world seems to crash every time.
Error Log: http://pastebin.com/SwqB4SWP