This is probably a fairly dumb question but how do I get the Pro Materials to show up in the Viewport - the “Show Standard Map in Viewport” button is unselectable and all I see in the viewport is the color/reflectance...don’t have this problem with A&D or standard materials.

Thanks.

This has been mentioned several times. 

The base Promat can’t show in viewport, but if you add a map to the material, you can make that visible.

I recommend using Arch & Design if you can.  There is a lot more you can customize and adjust to get the right look.

3DS Max Design 2011 64-bit - Advantage Pack
Dell Precision T5500, Dual Six Core Xeon X5650 @ 2.67GHz, nVidia Quadro 5000, 24 GB RAM, Win 7 Enterprise 64-bit
Minneapolis, MN, USA