Issue description:

Server crashes while joining. I am not what happend.
I hope the Crash log helps you

Steps to reproduce:

I am not sure since it happened on my Server while I was ofline.

Version (make sure you are on the latest version before reporting):

**Forge: forge-1.10.2-12.18.3.2488
**Mekanism: 1.10.2-9.2.4.103
Other relevant version:

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

crash-2017-09-26_19.18.07-server.txt

https://pastebin.com/U4GUHW4B

#4374