Break down

I tried to installed and freely.
Rhino always break down when I hit the register bottom with free lisence code.
This situation happened in Rhino5 and Rhino6.

can help me PLZ??

Please explain in more detail what is meant by

when I changed the language from Chinese to English, I fixed it successfully.
I can use in my Rhino 6 now. I think that the problems are in Chinese language system.

But I found another problem, when I want to make a developable surface between two complicated curves and then Rhino crashed. You can see the problem in the following pictures.

The blue words in Chinese mean “Rhino 6 have stopped working”.

thanks for your time