Analyzes your scene and collects all unique Object IDs and Material IDs.
Will create Multmatte Elements from the IDs with a logical naming convention.
Fixed a bug that would crash the tool when a VRaySky was being used in the scene.
Improved the logic for collecting material effects channel ids.
Added the ability to set your own prefix tags for the created render elements.
To install just drag the download .MZP file into the 3dsmax interface. You should get an Install dialog.
This tool will install a macroscript that can be accessed from the Customize User Interface dialog within 3dsmax.