Don`t worked:(

Hello :wink:
I can`t to use demo-version this programm, help me please

Im try and try again, but dont worked :frowning:

That’s very little information to go on. We really need to know at what stage it is not working.

Was the download OK?
Did you get the license key in your e-mail?
Did it install at all or hang during the installation?
If it installed correctly, what happens when you run Rhino exactly? Crash while opening? Black viewports? Something else?