Client Information:
Microsoft Windows 10 x64 Pro
Minecraft 1.18.2 (Java Edition)
ATM(All the Mods)7 Modpack Curseforge
Modpack version: 0.4.17
Forge Version: 40.1.31

Maybe this is caused by another mod in the pack? I'm unaware of which it might be in this modpack. Normally I'd try the modpack Issues page first but the error message says to contact the mod author, So I'm doing that hope I'm not messing up any guidelines or rules or something.

Anyway this happens when I interact with any interface on a freshly formed reactor multiblock including the coolant, access, and terminal blocks. Breaking a block and attempting to reform the multiblock in a different way, (i.e. move the terminal) crashes the game. Exiting to the title and reloading the world allows for interacting with any interface block again "fixing" the issue until the multiblock is reformed again(but only sometimes?).

I have a smaller reactor not far from this one, that I've had 0 problems with. It formed correctly and I can change it's structure without having to save and reload the world.

Reactor information:
Small:
Dimensions: 5x5x5
1 Terminal, 1 Control Rod, 2 Access Ports, 1 Power Tap, 3 fuel Rods, uses water sources for coolant.
Larger(Problem child):
Dimensions: 10x3x10
1 Terminal, 32 Control Rod, 2 Access Ports, 2 Coolant Port, 32 fuel rods, uses Enderium blocks for coolant.

All in all this could probably just be closed as I got a work around and I don't change the structure of the reactor often. Just thought I'd report it just in case it was of any use.

crash-2022-06-26_19.24.55-server.txt
crash-2022-06-30_13.05.29-server.txt

Edit 00: Moved image and crash reports.
Edit 01: Added some spacing between paragraphs.

#35
My bad this seems to already be an open issue.