I just updated to 5.6, but when complete it looks like this now.

I did do a backup right before. What do I need to do to get it back online? And why did I know this would happen?

Warning: require_once(/home/content/92/10157592/html/updates/concrete5.6.2.1_updater/concrete/models/json.php) [function.require-once]: failed to open stream: No such file or directory in /home/content/92/10157592/html/updates/concrete5.6.2.1_updater/concrete/core/libraries/loader.php on line 48

Fatal error: require_once() [function.require]: Failed opening required '/home/content/92/10157592/html/updates/concrete5.6.2.1_updater/concrete/models/json.php' (include_path='/var/chroot/home/content/92/10157592/html/libraries/3rdparty:/home/content/92/10157592/html/updates/concrete5.6.2.1_updater/concrete/libraries/3rdparty:.:/usr/local/php5_3/lib/php') in /home/content/92/10157592/html/updates/concrete5.6.2.1_updater/concrete/core/libraries/loader.php on line 48