My cousin set up a WordPress site a while back and has not touched it for a while. Consequently, she needed to update the version of WP she was working with. In attempting to update the versions, something went wrong. Now we get 2 fatal error messages:
Warning: require_once(/home/johns615/public_html/wp-admin/custom-background.php) [function.require-once]: failed to open stream: No such file or directory in /home/johns615/public_html/wp-includes/theme.php on line 1372
Fatal error: require_once() [function.require]: Failed opening required '/home/johns615/public_html/wp-admin/custom-background.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/johns615/public_html/wp-includes/theme.php on line 1372
Advice on how to correct these would be greatly appreciated!