Litterally Stalin

Title says all, it immediately crashes on open. http://pastebin.com/VupKknL1 That is the crash log.

The menu opens fine, but when I go to load the world, its starts the loading screen, then starts the exiting screen saying "Saving Chunks", then it turns into a solid white screen and nothing happens. Also, this started when I went into a quarry hole in creative and middle mouse clicked nikolite. As soon as i clicked on that ore, the game quit to go to the menu, but ended up with an endless white screen.