I have a similar situation!

I'm working on a huge project with about 90 materials and I was working during a long time, adding new materials with the interactive render, and I notice my CPU usage was 95%, so I save the project and tried to make a final render. And when I tried to render nothing happens, so I close the project, wait for a little and reopen it. Then I tried to render again and it was no materials in the render then I also notice there were no materials on Vray material list too!!!

So since I can see the materials on SketchUp, can I add them to Vray material list?

if not, I have an autosave project with the latest materials used, can I export all of them at once to my recent project?

I'm using:

SketchUp Pro 2016 (version 16.1.1449 64bit)
V-Ray 3.40.02
Windows 7 64Bit

Hey Dave, thank's for the feedback!

@unknownuser said:

Do you have the current version of TTLib installed?

Nop! And that was it! I installed, and work's fine now!

Thank You Dave!

Hey thomthom, Thank's for this great plugin! But I instaled it and it doesn't show up on tools menu!

but when i go to "Extensions -> SketchUcation -> SketchUcation Plugins Manager" the "tt_shell" is there!

How can I acesse the Shell Plugin?