This is currently compatible with Rhino V5 using: V-Ray for Rhino 2, V-Ray for Rhino 3, Rhino Render, Brazil, Neon, Octane.
Please note: V-Ray for Rhino 2 is not dependent on installing the Lightmap ‘Rhino Connection’. It includes its own code to talk with HDR Light Studio.
But it will still require a Rhino Connection license from Lightmap in order to connect with Rhino.
•V-Ray for Rhino version 2 Workflow
•V-Ray for Rhino version 3.6 Workflow