I am using VRay 3.6 for rhino 6 and could never get it installed properly (when I open the app, it says that it failed loading the plugin). I tried everything to install it, but I think some previous installation that I can’t get rid of is getting in the way. I have to go in the plug in manager menu and load it manually. The problem is, when I close a file, all the materials disappear and I have to start over.
How could I fix this?