Did some investigating and decided to create a new user registration and if it worked compare files etc.
I downloaded a new copy of the user registrstion and did virgin install to a new database.
I used the users simple registration and it accepted and wrote to the database.
I then logged into the users_Profile.php
added some details inc phone mumber went and wrote to the users table.
I exited and loaded admin\users_Update.php
searched for user
and then pressedthe pen icon to edit the user
changed the country and the city
It tells me straight away to "Please Enter a phone number" despite one being there although it is the same format as in the user profile page and the same number.
if i type in 12345678912 I get the same message, if I continue to type in letters then I get told I have exceeed the maximum number of characters.
I can't get past this so it's stopping the update process.
Not sure if this was my initial issue but....