I have followed two or three tutorials and browsed a variety of forum threads, but I have yet to find an answer for this. Reddit was not much help either. I have sample wrapped the textures used for layers in the material window. I have ensured that under landscape paint mode that each layer was made into a weighted blend layer that is in the same folder as the files I got from Megascans. Still, painting only shows colors in white and grey rather than rocky forest ground, ect.
Any help is appreciated.