WordPress “Add Media” button not working on 3.5 Fix

Though we have upgraded many sites to 3.5, this is the first time we have run into the problem of the “Add Media” button not working. When you click on it, nothing happens at all. But, don’t worry because there is a fix and it is very simple.

You need to open your “wp-config.php” file in the root of your WordPress Install. You can do this with an FTP program or a file manager from your hosting company.

Search for this line — it was near the bottom for us on the site we had an issue with.

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . ‘wp-settings.php’);

And just before it add this code:

define(‘CONCATENATE_SCRIPTS’, false );

So the final version now looks like:

/** Sets up WordPress vars and included files. */
define(‘CONCATENATE_SCRIPTS’, false );
require_once(ABSPATH . ‘wp-settings.php’);

Now your “Add Media” button should be working again.

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