@rvbus0fl Thank you so much.
I don't do synch but I made a copy of the preferences file as you described and deleted the original. Opened up Opera and it's open and working (for the moment anyway!) I didn't do anything else. No reinstall (I had already done that). So far, so good!
Thank you! I generally hate fiddling around with these kinds of things even tho I worked in IT for years. It's so aggravating and time consuming but your post and directions were done so well that it was easy! Bless you!