Issue Description:

The server is closing without any error message when entering certain specific chuncks, and I didn't even used any blocks from this mod in this world yet

What happens:

When I remove the mod the game runs normaly, if I put the mod again and try to enter the game already in the "problematic chunks" the server immetiately crash, the only way to reenter the server is by editing the player position in mcedit. I've tested creating a new world in single player flyed a very long distance in the world and the game didn't crash it only appears to be problematic on multiplayer server

Steps to reproduce:

1.Create a new world in a server
2.Fly around the world until the game crashes in some chunk

Affected Versions:

• Thutcore: 1.12.2-5.21.0
• Minecraft: 1.12.2
• Forge: 14.23.5.2838

Crash Report File:
crash-2019-07-26_11.29.15-server.txt

Hmm, this is a problematic one, I will try to look into possible causes, but I don't see any indications of what could be related to it from my mod from the report itself

I am getting this same crash.
crash-2020-12-01_18.54.38-server.txt

I reduced the mod list as much as I could. The crash is specifically between DynamicTreesBOP and Thutcore.

To reproduce the crash:
Generate a BBOP world
Teleport to a "SwamplandSpooky" biome
Fly around that biome
Crash to desktop

The teleport command is:
/otg tp SwamplandSpooky

This crash happens with out using Open Terrain Generator but I couldn't get a reliable crash, this crashes every time with out fail.