Camping Mod works fine in SSP, but fire it up on a SMP server, and it crashes out when using forge-1.7.10-10.13.3.1403.

crash report:
https://gist.github.com/Oxosorrel/64e9d1c8cb33b2a45ae6

Nevermind... I noticed got a similar crash on Pneumaticraft, so I did some digging (turning off mods that I just updated) rolling back a mod called Fareseek (a scala API for Streams mod) from 1.0.7 to 1.0.6 cleared this error.

Reported to Farseek developer delvr/Farseek#1