I morphed into a chicken (this was my first morph so i don't know if it is a problem with all morphs)
Basically, i had normal difficulty and was standing near a zombie spawner. I had Rogelike dungeons and battle towers installed. I doubt any of my other mods have caused the problem as they always worked fine. So when i morphed it said shutting down internal server. Then it said a fatal error has occurred. When i tried to enter the world again, in Peaceful it said the same things. It is really annoying as it was my best world survival DAMN. Please help me. Link to fml-client-latest.log: https://goo.gl/AGKRTS
By the way, I do have optifine but it never caused problems for me.

This is a conflict between optifine and morph

Thats wierd because I used to use Optifine with Morph and it worked even with modded morphs.

i uninstalled Optifine. IT WORKS thank you. But now my normal player has 2 hearts. DAMN even when i switch to a chicken and back i am still 2 hearts.

WELL at least my world is still alive.