Can't add Media in posts/pages since upgrade to newest version of WordPress

It’s a server, rather than a WordPress, issue.

Is this a wordpress issue ? If not, how comes it says to post on forum if adding

define(‘SCRIPT_DEBUG’, true); to wp-config page fixes the issue ?

Hi, I had the same issue, and I solved it adding:

define(‘CONCATENATE_SCRIPTS’, false );

in my wp-config.php file just before:

require_once(ABSPATH . ‘wp-settings.php’);

the above Solution solve my problem, but I did not know if this save or not

switch back to twenty twelve then it works perfect.,..

I’m having the same problem with the add media button since upgrading to 3.5. i’ve tried everything! if it’s a “server” issue, how am i supposed to fix it?

As per the Forum Welcome, please post your own topic. Your problem – despite any similarity in symptoms – is likely to be completely different.

Hey, I did the solution from Vincent up there:

Hi, I had the same issue, and I solved it adding:

define(‘CONCATENATE_SCRIPTS’, false );

in my wp-config.php file just before:

require_once(ABSPATH . ‘wp-settings.php’);

And it worked like a champ! Thanks Vincent!