WordPress 3.5 Add Media Button Bug

If you have updated to WordPress 3.5, check to make sure that the Add Media button is working. I have found that on 3 of the installations that I manage this function is not working properly. There is an exay fix that you can do though:

1. Open the wp-config.php file
2. Look for require_once(ABSPATH . ‘wp-settings.php’);
3. Right above that, add define(‘CONCATENATE_SCRIPTS’, false );
4. Save wp-config.php and upload it to your server (or just save it if you are in the WordPress Editor)

As always, please save a backup before you do anything.