Upon loading a modpack on the latest 1.12 version of the mod I am experiencing a crash with texture stitching. while the Weather mod is not specifically mentioned in the crash log, downfall4 is. So I am kinda guessing that Weather may have something to do with it.

crash-2018-01-22_00.57.05-client.txt

Are you using a resource pack?

I'm not.

Seems to be a different kind of way for minecraft to say you dont have enough memory, try allocating more, but also I was registering a lot of sprites I ended up not using so I cleaned that up in this commit: Corosauce/CoroUtil@5a0f6d3

Next CoroUtil release will have this.