The problem, it turns out, was that the db_version field in the wp_options table and the wp_db_version variable in the file /wp-includes/version.php didn’t match. Changing the number in the database solved the issue.
You are right – I have it sorted now, thanks!
Partially resolved, my URL was not the same for site & wordpress on settings -> general tab.
Now can’t log into admin panel…
I’m having the same problem and changing the HTACCESS file hasn’t helped:
Any suggestions?