Success! I suspended Avast (hidden icons window on toolbar) for 10 minutes and the install worked perfectly. Thanks Andrey for all your help. That may not be the end of the story though because I’ve had Avast for many years and never had this kind of problem before. And I am sure that many Tonfotos users are also using Avast without any problem. So I believe that something else in my environment must have triggered this incident and I have no clue what that might be. But for now, at least, I’m all set.
