Hello omns & ej64.
Yes, I do usually have a wifi connection. I hadn't realised the importance of using an ethernet cable. Anyway, my LMDE has now been removed.
I'm now having problems re-installing LMDE, but will persevere. It's probably something stupid - a senior moment on my part. If I can't find out what I'm doing wrong from exercising my brain or from reading notes on the forum, I may have to ask for help.
But of course that would be the subject of another thread. You can always pretend not to notice it!
Thanks as always,