Installing latest build (2 RC4 at the moment), will automatically download and install latest material library. If you want it to download separately, the files are located here: Dropbox - Error - Simplify your life
The material library links are always available at https://coronarenderer.freshdesk.com/support/solutions/articles/12000036778
Are we able to copy the material library around networked computers, rather than download all on install?
Yes, see my previous post. That’s exactly what the guide says.