Issue Description:

Ritual of the Zephyr causes servers to crash, from the trace it specifically seems to do with inventory stacks.

What happens:

Server crash https://pastebin.com/iGuaGXPj

What you expected to happen:

Not to crash

Steps to reproduce:

Not totally known as I cannot get onto the server. But leaving the Zephyr running seems to be step 1

Affected Versions (Do not use "latest"):

• BloodMagic: 2.1.9-78
• Minecraft: 1.11.2
• Forge: 13.20.0.79

Well that's an odd one. I'll have to take a look.

Does this still happen? I'm not seeing anything on our end that could cause this. Specifically, this is crashing while trying to update the comparator level.

Update.
(I didn't experience any crashes.)

I have not used zephyr since I published this bug, it could of easily been resolved during that time. Thanks :)