Describe the bug
My World was working fine, then I discovered ProjectRed was finally on 1.15.2 So installed it. All was working fine for a good few hours, then the next time I open the map it immediately crashes... Apologies as this may not entirely be a project red issue, however, it is peculiar that it has only just happened after installing the mod.
I'd even appreciate it if someone could work out what the crash report is saying to find the cause (if it is not PR doing it 🙏)

To Reproduce
Possibly not even reproducible?

Expected behavior
My world to load.

Crash Log

The game crashed whilst unexpected error
Error: java.lang.IllegalArgumentException: null
Exit Code: -1
crash log pastebin

Versions

• Dependancies:
  CodeChickenLib-1.15.2-3.3.6.424
  CBMultipart-1.15.2-3.0.0.106
  Scorge-3.1.2
• ProjectRed:
  ProjectRed-1.15.2-4.10.0-beta-27-core
  ProjectRed-1.15.2-4.10.0-beta-27-illumination
  ProjectRed-1.15.2-4.10.0-beta-27-integration
  ProjectRed-1.15.2-4.10.0-beta-27-transmission
• Full list of other mods installed
  on pastebin

Screenshots/Videos
https://user-images.githubusercontent.com/70548908/125689688-6d91e9c1-df44-4c2d-8614-35f94385f392.mp4

Don't really see a mention of Project Red in that crash log. The crash is coming from Immersive Engineering:

java.lang.IllegalArgumentException: null
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:108) ~[guava-21.0.jar:?] {}
	at blusunrize.immersiveengineering.api.wires.utils.WireUtils.getVecForIICAt(WireUtils.java:210) ~[?:?] {re:classloading}
	at blusunrize.immersiveengineering.api.ApiUtils.getVecForIICAt(ApiUtils.java:299) ~[?:?] {re:classloading}
	at blusunrize.immersiveengineering.api.wires.Connection.generateCatenaryData(Connection.java:121) ~[?:?] {re:classloading}
	at blusunrize.immersiveengineering.api.wires.ImmersiveConnectableTileEntity.genConnBlockstate(ImmersiveConnectableTileEntity.java:140) ~[?:?] {re:classloading}
	at blusunrize.immersiveengineering.api.wires.ImmersiveConnectableTileEntity.getModelData(ImmersiveConnectableTileEntity.java:153) ~[?:?] {re:classloading}

I would show this to one of their devs, maybe they know what's going on.

Okay, Thank you for having a look (I have no idea what anything in crash reports actually means!). Ill contact the Immersive Enguineering devs in that case :)