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So, I had recently just installed Mr. Hyde and I decided to try out the Veins MAT and when I loaded it onto the Genesis figure, nothing happened. It just added a simple flat MAT of the original Mr. Hyde MAT, no veins appeared.
Have you rendered an image yet? The veins preset adds displacement maps to the textures. Displacement doesn't show in preview; you won't notice any change until you render.
I wasn't happy with displacement handling, finally rewrote material.
You should use a math node on displacement because you need positive and negative direction.