crash log:https://gist.github.com/nacjm/8e4f02ab88ca5c30c641729135a43fc7

Weird. I believe this would more likely be an incompatibility with one of the other mods you have installed -- maybe try run the mod with just Sponge and Terrarium?

It seems this is connected to dalekmod also after further testing. just sponge and terrarium works fine

I am almost positive now I will crash from every mod with modded dimensions with sponge installed
this runs without sponge on the modpack. but with it it crashes constantly

and compact machines? https://gist.github.com/nacjm/1f1dea946f710aba0eea815fc6e1475a

Okay. This makes sense: Terrarium only initialises itself for the overworld, but the dimensions from these two mods do not override the biome provider, so it tries to use Terrarium's biome provider (but that crashes, because it is not initialised)

so how do we fix it?

Unfortunately until this is fixed the only option is to remove either Terrarium or the mods that are causing issues.

In terms of fixing it, it can be done on Terrarium's side. It's not an ideal fix but this is a generally odd situation where arguably neither side is at 'fault'. I'll try get a patch out today :)

should I build the dev build or wait for you to release a build with this patch?

Feel free to build yourself from the 1.12 branch (you probably don't want 1.12-dev)
Otherwise, I'll get a release out today some time

here is another bug coming from sponge after it runs for a time. Ticking world crash this time. https://gist.github.com/nacjm/806a41404c6ee3011280b556ce32004c

This looks like it might be an issue with one of the other mods again. Maybe try run on a vanilla world without Terrarium and see if the crash still happens?