Launcher/pack Version: Tekkit v 2.1
Operating System: Windows 7 Home Premium 64bit
Version of Java: v7 64bit
Description of Problem: Im Getting this error when im trying to make an item of the mods, and because i putted an item in me inventory, I can't login on someones server
Error Messages: java.lang.NullPointerException
Link to pastebin of log: http://pastebin.com/gvC3WhND
Tell me if u need any other infomation.