Art is having trouble with Windows 10. He registered just like he should have, but he got anxious and upgraded it manually. Leo says that's where Art went wrong. There's likely a compatibilty issue because he jumped the gun. Microsoft has been customizing the builds for each computer and when it's ready, they tell you it's time so you can then install it.
Leo recommends rolling back to the previous version and starting over. Then he should wait. Leo was notified almost immediately after he did this. Then he did the upgrade and it worked and activated smoothly. If Art can't roll back, the good news is that the next update in about two weeks should fix everything.