Interesting, something is corrupting your class file.

I would say it's a coremod that is broken.

You can try running with -Dlegacy.debugClassLoading=true and pastebin-ing the log.

Could you tell me how to do that.  I still don't know much about java.

http://i.imgur.com/vndhSqg.png

 

http://pastebin.com/

if you cant use pastebin

use this

 

https://gist.github.com/

Thanks, but I'm not using the vanilla launcher.  I'm using MultiMC 5.

Interesting, something is corrupting your class file.

I would say it's a coremod that is broken.

You can try running with -Dlegacy.debugClassLoading=true and pastebin-ing the log.

 

I did that and it still crashed.  Here is my crash log.  I was unable to pastbin my Forge log file because I keep getting a connection was reset error.

 

http://pastebin.com/4VmyXeag

We need the Forge log.

It's what tells us what is editing the classes.