Issue Description:

Crashed when right clicking a quartz slab for more recipes in JEI.

What happens:

Game locked up, shut down internal server, then proceeded to close to desktop.

What you expected to happen:

Expected to get more options from JEI for what I could do with Quartz slabs.

Steps to reproduce:

I also have 'EnderIO' mod installed.
Will be reporting this to them as well.
1.open recipes for Quartz blocks
2.Find where it tells you how to make quartz slabs
3.right click quartz slab
...crash

Affected Versions (Do not use "latest"):

• RandomThings-MC1.12.2-3.9.3.324-universal.jar
• Minecraft: 1.12.2
• Forge: 14.23.4.2747
• SpongeForge? no
• Optifine? no
• Single Player

Your most recent log file where the issue was present:

https://pastebin.com/0NNPLskU

Sorry, didn't know there was an update, thanks for your prompt response!
(also new to using github for crash reporting, will be sure to keep that advice in mind next time round.)

Don't create an issue before making sure it also happens with the latest version of the mod please.
Maybe even check recently closed issues.

This is a duplicate of
#331
#329
#328
#326