I set up a small private server for me and my friends using the FTB modpack, and while loving it, we (mostly me, although I do play the most) are running into an annoying crash. I think it's related to NEI, as it only happens when we try to look up recipes, but I am unsure. Log is in the pastebin link, hopefully it helps.
http://pastebin.com/Xm3e6HCA
http://pastebin.com/Xm3e6HCA