Hi Paul and Luther,
I had gone into 'Edit Profile', but it was the 'SAVE' button that was bugging me.
However Once it got to 2pm my brain started to function and eventually I was able to think clearly and solve the problem.
I really should listen to my wife. She tells me never to try using my brain till after 2pm. I really am a Zombie before that time.
The glitch was this:
I use Norton 360 with password manager and auto fill.
As a result, above the 'SAVE' button were my auto-filled user ID and password,
Every time I tried to save my edit, I got the message that I was 'entering an invalid email address' (obviously!).
Once I had disabled that auto-fill function for this site, I was able to save my edited profile with one click of the 'Save' button', duh!
I seem to constantly have 'The Fog On The Tyne' don't I??
Anyway,
Thanks guys.
George