Not sure if this is you or not, but I looked through the crash report (with my very limited knowledge) and saw your name pop up quite a bit so figured I'd try it out here. Let me know if I need to go elsewhere.

This might help haha

http://pastebin.com/W4QMknUA

Downgrade your Forge Version to 2061 fix this issue

BTW, upgrading to forge 2063 will also fix it

Not related to rftools either

No this is already forge 2063 but lex hasn't fix this npe. i see it in my dev env too

Oh ok, thanks guys. I actually just tried to see if it was ender io and left ender io where it was at and upgraded everything else and that has apparently fixed the issue as well.