How do you enter a new validation code when installing rhino?

I am trying to download rhino again on my computer, but it’s using my previous one which expired. How do I do it manually?

Hi Dinara - I am not sure what you mean… if you mean you would like to install an evaluation version because the previous one expired, there is, of course, no way to do that and get more saves or anything. If you have a CD key and you have a recent evaluation version, you can enter it at the start up screen. But in that case normally you would have a disk as well.