Thank you to all those who took the time to offer me some assistance. It's my sincere hope that you might receive the kind of assistance that you offered me.
The solution to my problem, a method that would allow me to export Opera Bookmarks, was solved by the use of the extension:
Bookmarks Import & Export - by Martin Sermak - Copyright 2014
Thank you to Martin for this workable solution to a problem that should never have been passed on from Opera Developers to their user base.
I for one will move on to Firefox and probably never consider Opera as a viable browser again.