This issue was reported by https://twitter.com/Mrbysco

https://gist.github.com/darkhax/aa02eee805b0b98d50a5c4acd1997133

I already did this and it didn't fix it.
_features {
# Allows the animation of block/item textures to be disabled. [default: true]
B:"Disable Animation"=true

This is an issue with Optifine not Foamfix, I will look into properly handling a way to fix it so it can be run at the time as Optifine.

This issue can be temp fixed by disabling animations in the config. This will remove the /surge animation command, but it will allow the game to launch.

You want disable animations to be false, not true.

i have the same issue with surge and optifine
i set the disable animation option to false but it still crashes...

http://pastebin.com/r5HPvzgg

This should now be fixed with 1.1.0.64 (I just uploaded so it might not be up yet), surge disable animations feature will not run when optifine is installed

1.1.0.65 should be fully fixed with compatibility