Out of Index error - CC Body and Stubble, Wrinkle Maps

Hello, I’m trying wrinkle maps, although I don’t know if this is creating an issue. Unity reports “DX11: Texture index out of range” at regular intervals when I select CC_Base_Body or Chin_Curtain_Stubble.
I’ve tried with and without wrinkle maps component, w no change.
Is there something I misconfigured between Char Creator and Unity?
Video: Out of Index error - CC Body and Stubble, Wrinkle Maps

Update: I re-ran the CC Importer with wrinkle maps turned off, and the index error stopped. I’m supposing my wrinkles setup in CC needs adjustment.

Update, I kept wrinkle maps on and deactivated ‘Receive SS and Receive Decals’ on the Head texture, and these warnings stopped.

Turn off “Use Dual Specular Shaders” in the auto-setup settings.

The Stack Lit shader for the dual specular effect only supports a limited number of texture slots, and in later versions of Unity (especially 6) this limit is even worse and too low for the Wrinkle map system.