Just a heads up:
Installed Rhino 6 along Rhino 5, but starting Grasshopper in Rhino 6 crashes the program, because it is trying to load the Vray for Grasshopper libraries. Removing the library solves the problem.
This is a known issue. If you wish to use Grasshopper in Rhino 6 while having V-Ray 3.60.01 for Rhino 5 installed, simply reinstall V-Ray again but do not include V-Ray for Grasshopper.
The upcoming v3.60.02 will provide Rhino 6 support.
Kind regards,
Peter