Issue Description:

I was attempting to log into my game, it crashed. I'd noticed my world having issues previously when I tried to shut it down.

What happens:

Crash on world startup.

What you expected to happen:

Normal world play.

Steps to reproduce:

Unknown.

Affected Versions (Do not use "latest"):

• EnderIO: EnderIO-1.12.2-5.2.66
• EnderCore: EnderCore-1.12.2-0.5.76
• Minecraft: 1.12.2
• Forge: 1.12.2-forge-14.23.5.2854
• SpongeForge? no
• Optifine? yes
• Single Player and/or Server? Single Player

Your most recent log file where the issue was present:

https://gist.github.com/border999/8948047a80912e2d5e7f87fef0a12841

I also have this problem

i'm having no issue with Conduit Probe crashing nor is it missing

Another 'missing item' bug report from over a year ago was #5135. It sounds like the cause of that wasn't in the crash log, but was clearer in the running logs. If either of you are still able to reproduce this, could you upload both a new crash report, and your latest.log file from the logs folder?

@VT-14 Something I will note that this issue seems to crop up after the world starts to have problems like my openblocks gravestone not deploying when I die, logging off will either freeze the game or take a long time after that. After trying to get back in a few times I got that crash. I know this is the general circumstance that occurs beforehand because I've had to use backups a couple of times recently because of this issue.