Nacreous Clouds

Seen all over today.  Harbinger of very cold weather apparently.  I expect that there will be quite a few blips like this one tonight.
 
The pooter gets worse.  In trying to roll back and/or sort out the burn to disk problem I have discovered that there are a heap of things messing up W10, including the registry backup/export not recording anything.  I am NOT a happy bunny, and will have to think this out properly.  A different operating system may be the answer, but I don’t want W11, and I can’t afford to loose the information and data stored in Access etc.  Maybe a complete reinstall may be the best way in the end.

ps - the registry backup/export was my error, it's working ok