If player starve to death, minecraft crashes. Not sure about other conditions.
Also items don't drop, and graves from openblocks or gravestone mods not creating (if enabled).
http://pastebin.com/XtXxv2v0

Noticed, that i use old version, but updating it to 0.8-dev RC1 not helps.

I found the source of problem: i have backpack in necklace slot (baubles mod) and clicking them now make new crash: http://pastebin.com/DCBbTqnW
Not sure if backpack must drop at death, but it is not.

Nevermind. In 0.8 it is not using baubles, lol.