RPCs not rendering with materials

Recently, I re-subscribed to Archvision for a year’s duration. I’ve used RPCs in Rhino in the past, but it has been quite awhile, and I’m not sure if I’ve forgotten something. The problem is that, although I can place RPCs in my Rhino file, they don’t render correctly in Flamingo. Instead of displaying the correct image(s), each RPC just renders with the default material.

Any idea as to what I’m doing wrong? Thanks, in advance, for any help or suggestions.

Any suggestions as to how to get Archvision RPCs to print correctly? Currently, although I can place them using Rhino’s “RPC” command, they render as a grey material:
Thanks, in advance, for your help.