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Issue Description:

Crash on startup when loading with roboticraft
https://gist.github.com/vrork/c52f4e128eae3ab91a81a5369b917971

So as a little explanation my mod enumerates all the blocks/items in the game so that they can be referenced by a python api. It does this as the last step of the registration process and tries to use the display name of the item stack and then its resource name.

What happens:

The server crashes on initialization

What you expected to happen:

The server to start

Steps to reproduce (important):

1. Have roboticraft and ironbackpacks
2. start server

...

Affected Versions (Do not use "latest"):

• IronBackpacks: 1.12.2-3.0.8-12
• Minecraft: 1.12.2
• Forge: 14.23.3.2702
• Other Conflicting Mods (may be irrelevant to your issue): roboticraft

#237