Error on load.php, won't allow me into admin
I moved by Wordpress site to a new host using Wordpress move - it worked fine with 2 other sites, but this one didn't work perfectly.
The site is www.switch2dvd.co.uk.
After migrating the site to the new server and logging into the admin, it asked me to update my database. I clicked "Update Wordpress Database" and it supposedly updated.
The login page is fine, then after that, I get this error:
Fatal error: Call to undefined method WP_Screen::in_admin() in /home/lakerhol/public_html/switch2dvd.co.uk/wp-includes/load.php on line 606
Any ideas? Thanks!