Goety is currently incompatible with Concurrent Chunk Management engine. It crashes/errors trying to spawn an obsidian monolith during structure generation. It looks like the getLevel().random in this line is not thread-safe:

Crash log here, but it's not a clean install. I'll try to get a minimal reproduction later. I did not upload the full log because it's 76k lines long, but I can attach it if necessary.

Works perfectly! Thanks a bunch.

I have no clue if this would fix this issue or not, but hopefully it does:

Is that change included in 2.5.27.2?

Yes

Thanks! I'll give it a shot.