Versions

Betweenlands version:

3.4.0

Forge version:

1.12.2-14.23.5.2768

Singleplayer or Multiplayer:

single

Installed mods:

i don't have the time (or patience) to transcribe all of the mods, so i just got the list from the crash log.
mods.txt

Link to full crash log

crash-2018-11-05_18.48.34-client.txt

Description of the problem

How to reproduce:

1. get algae
2. get a mud brick pot
3. put them together
4. profit

Expected result:

i honestly don't know, maybe nothing, maybe a missing texture, a little bit of grass, etc

Actual result:

the game crashed and continued doing so as soon as i opened the world

Fixed in 3.4.1