I don't know why but i've tried some of the things on the site but i'm still getting this error.
http://paste.ubuntu.com/5632934/
I'm using: Forge Build 7.7.0.595 (which at the time of me typing this is the latest build) , CodeChickenCore 0.8.4.3, Not Enough Items 1.5.2.4, BibliCraft 1.1.3, ChickenChunks 1.3.2.2, ComputerCraft 1.51, Gravity Gun and Portal Gun 1.5.0v2, IChunUtil 1.0.0, Iventory Tweaks 1.51b, and Iron Chest 5.2.1.288. All mods when i've checked on the forums have all been updated to 1.5 and I always keep getting the same errror no matter if I reset and redownload the mods or the folder.