I’ve attached the Avast-Browser-Cleanup.log. I noticed references to Advanced System Care which was deleted some time ago. I also found SafeSearch in the log as well as several places in the registry. I reinstalled Chrome in the case that it might have been corrupted to some degree. Now, the browser scan still flags SafeSearch as an issue, but allows the removal option without freezing the window and comes back to report no undesirable plugings found. However, a re-scan again flags SafeSearch - evidenced that avast has fixed nothing.