Hello again; I have switched themes and am using arras 1.4.2.
Again the author name will not show; either in post or when you go to the "edit post" dashboard. I have created a new author not as an administrator to see if that was the problem but still no author name showing up.
The only way now seems to add a custom field to every post to display the author name and an author post link; but this seems very long winded.
many thanks again