My client decided that he would take it upon him self to update to 5.5 from 5.4

Now the site just says this:

Warning: require_once(/home/tmdesign/public_html/perranporthsurfschool.co.uk/updates/concrete5.5.2.1/concrete/config/../libraries/loader.php) [function.require-once]: failed to open stream: No such file or directory in /home/tmdesign/public_html/perranporthsurfschool.co.uk/updates/concrete5.5.2.1/concrete/config/base.php on line 532

Fatal error: require_once() [function.require]: Failed opening required '/home/tmdesign/public_html/perranporthsurfschool.co.uk/updates/concrete5.5.2.1/concrete/config/../libraries/loader.php' (include_path='/home/tmdesign/public_html/perranporthsurfschool.co.uk/libraries/3rdparty:/home/tmdesign/public_html/perranporthsurfschool.co.uk/updates/concrete5.5.2.1/concrete/config/../libraries/3rdparty:.:/usr/lib/php:/usr/local/lib/php') in /home/tmdesign/public_html/perranporthsurfschool.co.uk/updates/concrete5.5.2.1/concrete/config/base.php on line 532


Can anyone help me?