Issue Description:

Server crashes on 1.10.2

What happens:

Server crashes with the above exception.

What you expected to happen:

The server to remain running normally.

Steps to reproduce:

I haven't been able to consistently replicate the issue.
...

Affected Versions (Do not use "latest"):

• EnderIO: 1.10.2-3.1.157
• EnderCore: 1.10.2-0.4.1.62-beta
• Minecraft: 1.10.2
• Forge: 12.18.3.2185

Your most recent log file where the issue was present:

https://gist.github.com/Renari/43ac8a41a73bfe030d0410fd3feb3069

see #3939