Unfortunately, for some reason, all the images on New Writing disappeared. I immediately thought I would need to:
- Reinstall WordPress
- Check MySQL database
- Pay a ‘Technical Guy to Fix it’
- Search on WordPress Forums
Then I thought I would contact my host host-i-can. They said it was almost certainly a htaccess issue.
I googled htaccess, and happened to see an article mentioning prevent hotlinking.
Then I remembered I had turned on an option in Host i Can preventing Hotlinking.
Disabling this option bought all the images back to Net Writing.
Moral of the Story: always try the easiest and cheapest methods first. 
Happy Christmas to all.