I tried that, but I can't move it up enough to be able to reach the bottom of the window, so I can't click on 'Clean', nor reduce the size of the window from the bottom. My screen dispay is 712 pixels high. I also tried going back to the last version of CCleaner, but it doesn't appear to be available anywhere.
Thanks for trying to help, but I've given up on CC, and gone over to [competition], which works on my set-up with no problems.
Best regards,
Jack E.