Landscape Material Turns black when normal maps are used 4.15

Hey folks,

I am having an issue with my landscape material. When I only use the texture samples for my diffuse textures, then the paint tool works perfectly.

But when I connect normal maps, all the other textures turn black and don’t show up at all.

Here are the things that I have tried so far:

  • Paint over the whole landscape with one texture, and try re-painting
    • This results in the texture that I painted over with first being there, and then as soon as I put nay other texture on then it turns black where that texture is.

Here is my material

Using version 4.15