3-D Rendor Error: Wrong color being displayed

[KAGri]

Hello,
I am trying to render a view into 3-D. The colors that I have mapped to my layers in the Materials Library are not displaying with the correct colors. For example, I chose the color Med-Ash for an object, but when renders, it appears purple.
I would greatly appreciate any help.
Thanks!
Kagri

 

[Striker]

You must set the preferences to "Photo Real" or "Photo Raytrace" otherwise the materials are not displayed when rendered.

 

[KAGri]

Thank you for answering my question. That makes sense.
Your answer actually leads me to another question -- when I attempt to render using the Photo Real or Photo Raytrace option, I get an unknown renderer error, and it stops rendering.
I can only render using the "Render" option. Any ideas?

Thanks again!
Kagri