Issue with upgrade to 5.5.1
The site seems to work fine. However when I look in with admin, I see a grey bar but no buttons. When I debug in the browser it gives me a Uncaught TypeError: Cannot read property 'dialog' of undefined as well as Uncaught ReferenceError: ccm_activateToolbar is not defined.
If I comment out the statement <?php define('DIRNAME_APP_UPDATED', 'concrete5.5.1');?> in the site.php file in the config directory to my original version, then the grey bar contains working buttons from the original version.
I am using a custom theme that contains the jquery.js
Just put it on header (work for me):