on a mac pro osx 10.11.6
I took your SU file to test and show what I am getting here in hopes you can tell me whats wrong... thanks for that BTW

I recently upgraded to 2017 SU and DL thea for it installed the SKM materials into the applications content materials folder
everything seems fine except the materials are not working correctly or in some cases displaying correctly either in material browser or on model... They are present in the materials browser and I can apply them they just dont render
as you can see from my attached images I have done test using your scene and one I was working on
yours gave better results as your lights work and your materials have their properties but as you can see I cannot add any new materials to the scene correctly...
I may try and bring some of your materials into my scene to see what that does
anyway I really hope someone here can help with this, as I really need it for work
BTW Thea was working fine in 2016...
Appreciate any help
D