Crash Help :>?

[Phyroxzenoid]

I'm working on making a modpack and I get this crash when I try creating/loading a world. Is anyone smart and knows what it means, I've never run across this type of crash report before.
http://pastebin.com/tA6VL101

 

[epidemia78]

Could be optifine.

 

[Phyroxzenoid]

I removed optifine and tried without it: it's not causing the problem. I'm really stumped here, I've tried removing all mods that could have caused it that I installed recently...

 

[Wagon153]

Grab a fresh version of all the mods and, if using MultiMC, create another instance.