When you use 3D biomes if you try to use - values or plus values it refuses to load

but only with caves my pack makes caves under y 50 to have cave biomes

but is not if it’s the only biomes 

It has

 the less then zero pack is the one with a extra biome with - temperature range for a crimson forest biome it works with lush caves and dripstone but none of my other biomes I set it to use -2 to 2 for a base layer of biome noise to make sure there’s a biome

its says the noise range is invalid 

I have no more info and mark as public this is to be seen faster

make cave biome with a <0 noise range

the first file better gen is the version I got working just about