Versions

Betweenlands version:

3.3.7

Forge version:

2673

Singleplayer or Multiplayer:

This both works in single (LAN) and mulitplayer.

Link to full crash log

https://gist.github.com/artdude543/418c79a4fc5d5793e1146c441c1d325f

Description of the problem

See: DarkPacks/SevTech-Ages#1584

Tested on a server to confirm and the server died.