It gives me a "A fatal error occurred, this connection is terminated"

https://gist.github.com/DrSoda/661b7a8b536e31a3afb2

Using mods:
BluePower
CodeChickenCore
NEI
FMP
and Optifine

EDIT: This happens after I place a bluestone wire, and then it crashes like this, and every time I load up the world I get same error.

Maybe because you're using a Waila version for 1.7.2 ? :P

That, and your crashlog isn't complete.. Please supply JUST the crashlog, not the entire log!

It never crashed, and no crash log. But yea it was probably the waila. Forgot I had it installed.