Do you need the specific or the location of the mtllib.exe tool for your specific host application (e.g., 3ds Max, SketchUp, or Rhino)?

Now, go render—without the spinning loading wheel.

It wasn't just the default few; it was the whole library. Thousands of materials, meticulously cataloged. He saw Fabric, Metal, Glass, and the all-important "Vegetation."

There it was. A thread buried in the support forums titled: "How to deploy V-Ray in offline environments."