'The game crashed whilst exception ticking world
Error: java.lang.NoSuchMethodError: com.valeriotor.beyondtheveil.entities.ictya.EntitySandflatter.isAddedToWorld()Z
Exit Code: -1'

Have received this several times while attempting to explore Arche. Biome it occurred in is Arche plains, and I have no other mods installed. Can barely leave the Blood Home without this happening.

(Also, small side note - Absolutely love the mod!)