Hi all, Have just run the upgrade from Win 8.1 to Win 10, on my little used laptop to see how it went. I was surprised that it went well and all seems ok. On looking through the program file I found a file in the: Program Files named: BKOPTION,P6 Type: P6 File 8KB I removed BK6 from the laptop when I updated to BK7, so can I safely remove this file? Thanks, Mick. Michael Cant Isle of Wight England