If this better belongs over https://github.com/TheCBProject/CBMultipart/issues, I can post it there instead.

Describe the bug
Upon a crash caused by Project Red Illumination / CB Multipart, the whole world got corrupted with repeating crashes (and also seemingly this caused block ID shuffle).
Before this crash, in chunks with Project Red multipart lamps we had other weird stuff happening, with Railcraft's Blast Furnace multiblock constantly resetting (requiring to break & replace a block) and other strange stuff.

Crash Log
https://mclo.gs/jmA7Q8W
After this first error/crash, there are never-ending errors in that world save (https://mclo.gs/lHFISW6).

Versions
Include versions of the dependencies. And since you're looking at it, make sure ProjectRed is up to date. Don't submit bugs for old versions, as they could have been fixed.

• CCL Version: 1.12.2-3.2.3.358
• FMP Version: 1.12.2-2.6.2.83
• MrTJPCore Version: 1.12.2-2.1.4.43
• ProjectRed Version: 1.12.2-4.9.4.120

Screenshots/Videos
Messed up block IDs for reference

Found different errors beforehand in the log, therefore I can't point this issue at Project Red - closing.