WP 3.5 fresh install "add media" broken

If I disable ALL plugins, it works fine.

Can you then reactivate the plugins one by one and figure out which one is the culprit? Once we know we can then let the plugin developer know and see if we can find the issue. Here’s a list of known issue as well in case you haven’t seen it –
https://www.ads-software.com/support/topic/troubleshooting-wordpress-35-master-list?replies=4

should it break with only Jetpack turned on? should it break with only google xml sitemaps turned on? because it does both those things…

and I’ve reinstalled via FTP just to see if that made any difference. themes don’t make a difference either.

adding this line:

define(‘CONCATENATE_SCRIPTS’, false );

to the wp-config.php file fixes my issues.

it doesn’t fix mine though, has anyone a solution that does work, and please mods don’t give me that spiel about plugin disabling etc as i have done all that already

@davidglynn… This thread is “resolved”.

If you are still seeking solution to your specific issue, I suggest you start your own thread.