Voronoi and geometry

[VictorGamma]

Looks like your normals are flipped. Either flip them back in the input geometry or render with a double-sided material.

Thank you for the reply   Flipping the normals did not seem to fix the issue either.  I ended up recreating the mesh and all is well.  I am guessing the original mesh maybe was not registering correctly or has some issues that I am not able to diagnose.   

I love TyFlow! it is amazing - still much to learn 

Thank yoU!