Some layers in my landscape auto material does not work

Hey :slight_smile:

It is maybe a simple question. In my landscape auto material only one of 4 layers are working.
Later I want to try even more layers on this.

Right now I have two moss layers combined to one layer. The problem with this is, that they take 3 slots, but I just need one of those.
The 4th layer I have is cliff layer. Later I want to add Sand layers too.

So, while the 4th layer (the cliff layer) is working, the moss layers do not. I do not know why.
I added layer info (the first option) to them. They all have shared wrap. They are all build the same way, just with different textures.
So the other 3 layers appear black on the landscape but also strange on the preview.

Any ideas?

Kind regards,