Due, I think, to a plugin conflict I was unable to access my WP admin - long story here!
I ended up deleting the folder containing all the WP site from the domain and reinstalling WordPress. I then imported a backup of my database using phpMyAdmin.
When I login to wp-admin I get the message:
WordPress has been updated! Before we send you on your way, we have to update your database to the newest version.
After updating, I get
Your WordPress database has been successfully updated!
When I click on "Continue" it brings me back to the prevous message.
Any ideas on how to get out of this loop?