Issue Description:

Been testing out 1.10 mods and ran across this crash. I am not sure if it is on your side or JEI. When loading into the game I get the attached crash.

What happens:

It looks like JEI is trying to enumerate the items and crashes on the staff of travelling. If I remove EnderIO it loads fine, if I remove JEI it loads until I go into creative and get to the EnderIO section. I will test without the other mods if you think it is a conflict just let me know.

What you expected to happen:

Steps to reproduce:

1. Load into game with both mods loaded.

Affected Versions (Do not use "latest"):

• EnderIO: 1.10-3.0.0.55
• EnderCore: 1.10-0.4.0.33
• Minecraft: 1.10.2
• Forge: 1.10.2-12.18.0

Your most recent log file where the issue was present:

[pastebin/gist/etc link here]
crash-2016-07-02_08.36.34-client.txt

One of your mods ships a bad RF API

Thanks I will try to figure out which one.