I created a landscape material with layer blend node and hooked up 2 textures in. After that i proceeded to paint them and all was fine.
So I decided to add more textures into the material and I did. However after the compile is complete, newly added textures do not show under the options for paint
Did you try to erase the 2 existing layers and rebuild new ones ?
Try to remove the material from your landscape and reput it in…
Did you check your blend by layer node in the material ? The name for each layer is good ?