Summary: Do I need to install all the old versions of Rhino to install the V5 upgrade?
Related installation help: Troubleshooting Rhino 5 Installation
I have a new computer and I want to install Rhino 5. I have always purchased upgrade versions of Rhino. Do I have to install all previous versions and successive service packs??
No, but you need both your new Rhino 5 License Key and the License Key from your previous version of Rhino.