Ron
I don't get it there is no reason at all why you should not be able to access and open the CBS log. Don't forget that to see the CBS log folder you need to go to 'Organise' in Windows Explorer, click on 'Folders and Search options' then on 'View' click in 'show hidden files folders and drives' click 'OK'
The location will show up in 'Command Prompt'. When you have found the CBS file right click on it and on copy. Paste it on your desktop. It will open in the normal way.