Hi, I'm new and learning CA, using X15 Premier. I created a very basic house and set up an orthographic full exterior view - when I go to the "Display rendering techniques" drop down, PBR is grayed out along with Clay. The others are available. Same with other exterior views, but PBR is available for interior cameras. I seem to remember being able to use PBR on external views before, I suspect I've done something silly, what am I missing? The file is attached. Thanks for any help!
Sample plan.plan
Sample plan.plan