Game doesn't launch when JsonThings, Hostile Neural Networks and Create: Central Kitchen exist

[Periam]

Minecraft Version

Minecraft 1.21.1

Crash Reproduction Steps

1.Install mods:
conditional mixin 0.6.4 (conditional_mixin)
Create 6.0.6 (create)
Create: Central Kitchen 2.1.3 (create_central_kitchen)
Create: Dragons Plus 1.6.1 (create_dragons_plus)
Flywheel 1.0.4 (flywheel)
Hostile Neural Networks 6.3.0 (hostilenetworks)
Json Things 0.13.2 (jsonthings)
Just Enough Items 19.22.0.315 (jei)
Minecraft 1.21.1 (minecraft)
NeoForge 21.1.192 (neoforge)
Placebo 9.9.0 (placebo)
Ponder 1.0.56 (ponder)

2.Run Game.

Crash Report or Log

https://gist.github.com/Periam/9cdfa877faeef2fd0399ae853069d1a4

[MarbleGateKeeper]

From the log it seems like a conflict issue with Placebo.

But....I cannot reproduce this issue, with newset Placebo or 9.9.0.

[Periam]

After testing the latest version of all the mods, the game still crashed.

latest.log

crash-2025-09-04_11.20.56-fml.txt

[MarbleGateKeeper]

Still cannot reproduce this issue with completely new instance and exactly same version and same mods.

I don't have much clue. Please try use these two mod files of C:CK and C:DP to see if issue still persist.

https://drive.google.com/file/d/1bj3lJyW8ovk_ZhPg5WcceAp4WL2c7dp8/view?usp=sharing
https://drive.google.com/file/d/1mLqTe71hyoImwJJ4emVAJKxm56s1GqrJ/view?usp=sharing

[Periam]

After installing the version provided in the links for both mods, the game launched and a world was loaded.
here is the logs if you need it.

latest.log

[MarbleGateKeeper]

Fixed.

[MarbleGateKeeper]

The patch is reverted since it caused more issue.

The original code should have no problem with registry since AddPackFinderEvent is fired much later than registration completion. I now assume issue is in somewhere else.