VrayProxy Thumbnail Generator
This script was requested by 1rv here:
http://www.scriptspot.com/forums/3ds-max/scripts-wanted/generate-vraypro...
It is converting selected objects to VrayProxies with their materials as .mat files and create thumbnails (two options are available rendered thumbnails or viewport grabbed thumbnails)
if selected objects are already vrayproxies it will generate the corresponding .mat files and thumbnails and copy the existing vrayproxies in the destination folder.
The objects need to be oriented toward the front view.
I've added an option for loading an HDRI file to get some reflections and a better lighting, two option are available for the HDRI, saturation and intensity, if you don't select any HDRI it will render with a white dome light instead.
For viewport grabbed thumbnails the background color doesn't work as i would like, when set to white it is working but when set to an other color depending on your viewport configuration you will have either the right color either a gradient, as i wasn't able to fix this via maxscript, i've added a button to open the viewport background configuration tab to access those settings easily.
There is an option to get the output path from the selected objects used bitmaps paths, and an option to collect and relink bitmap to a new folder called "Maps" in the destination folder
there is two other buttons, one that create thumbnails from existing vrayproxies (to render them with their materials they need to have corresponding .mat files in the same folder), and an other button that directly create thumbnails from selected objects ( VrayProxies or any geometry),both buttons have an option to render or to grabviewport thumbnails.
I Added an other Script that imports vrayproxies with their materials, you can import multiple files at once, they will be put into a layer called "Imported_VrayProxy" and the imported objects will be evently spaced at origin.
This script is now part of http://www.scriptspot.com/3ds-max/scripts/vray-toolbox
update 1.5.5: Bug fix, automatically create proxy was working as expected while "Generate thumbnails" was checked and thumbnail type was "Viewport", but it wasn't working well when thumbnail type was set to "Rendered" or when "Generate viewport thumbnails" was unchecked.

Comments
you're welcome!
you're welcome!
Glad you like it :)
Super useful and feature
Super useful and feature rich plugin, many thanks Simon!