Issue Description: Hard Crash

What happens: Game crashes while in creative mode when trying to click on the search icon in the creative inventory

What you expected to happen: Expected search bar to come up.

Steps to reproduce:

1.Go into creative mode
2.Open inventory
3.Click on search icon
4.Crash

Affected Versions (Do not use "latest"):

• EnderIO:EnderIO-1.9.4-3.0.0.37_alpha
• EnderCore:EnderCore-1.9.4-0.4.0.23-alpha.jar
• Minecraft: 1.9.4
• Forge:forge-1.9.4-12.17.0.1951

Your most recent log file where the issue was present:

http://pastebin.com/N6yWYE6V

Getting the same crash!
http://pastebin.com/YMbz2AVb

I'm also using;
EnderIO 1.9.4-3.0.0.37
EnderCore 1.9.4-0.4.0.23

Only difference for me is;
Forge 12.17.0.1954 instead of 1951

:)

see #3372