So I just finished raising the Pterosaur grab a whip, right clicked on it got on it and went up then went down and crashed. Now I can't get on to my world, my world is now corrupted, not sure what to do. I don't really want to restart from the beginning. I hope this is fixable.
output-server.log http://pastebin.com/vheZdJ5V
Console http://pastebin.com/2J79rWUP
Not sure if this helps, just giving anything I think will help fix this.