Well, the file opens now. I was messing around with Snapshots, so it is possible that it was related to that, because I found another funny thing.
- Go to the Snapshots panel.
- Change the Inspector to Properties, and change it back.
- The Panels won’t show anymore, unless Rhino is restarted. If it’s not showing up after restart, go to preferences, and change the Themes. After restart, it will work again.
I cannot reproduce the crashes, so I cannot tell, whether it was due to Focus, or Snaphots, or something completely different, sorry!