Crash, when logging back chunks have shifted.

Game crashed coming back from the nether. When logging back in portions of the compound are totally missing or moved around, huge square holes where the cows were. 

All animals in effected are are gone.

Map won't load any farther.

Cant interact with anything.

Server has become unplayable. 

Java has to be force quite when try to exit every time since

Single payer server with no mods named Narnia 2

My miss's is very sad her animals are missing.