Repair didn’t change anything. I then followed the advice to uninstall and then reinstall avast; I wish I hadn’t done that because it got even worse.

Now I get all kinds of errors in the log: 282 errors on one reboot of the system. It’s a more mixed bag of errors and the the interface can’t be opened as well.

I will read some of the other posts here and see if I can find a solution. Otherwise I probably pass this version of Avast and use another program or stay in Linux all the time until a better version is released.