Eddy,
Thank you again. I'm already running the most current version of Avast. The repair option Avast sent me did repair my Avast Cleanup Premium program and it works fine now. The instructions they sent I've cut and paste here in case someone else wants to give it a try.
From Avast on September 22, 2017:
I suggest you to repair and update your Avast program by following these steps:
1.Click on Start --> Control Panel --> Uninstall a Program (Programs and Features, Add or Remove Programs) --> Avast Software--> Click on "Uninstall/Change" --> Repair.
2.After the repair, please make sure that you have the most recent version of Avast. To do that, please open Avast and go to --> Settings --> Update --> Program --> Update and update your Virus definitions as well.
3.Restart your computer and check with Avast Cleanup.
Tony