I'm using Iclone vs. 7.3.  When applying a PBR material the shader maps change to the selected material but do not appear on the prop on the screen.  I have PBR turned on for the project and defaults applied and PBR selected for shader type in the modify panel.  The manual does not indicate anything else to do and can't find a forum topic for problem.  What am I doing wrong or need to do?