Could you please go through the steps listed on
http://codex.wordpress.org/Using_Your_Browser_to_Diagnose_JavaScript_Errors
and report back what causes the issue?
Also, can I get a link to your site to test something non-invasively?
The issue is not browser related…did not work with firefox nor IE.
With Firebug I could see the following error:
TypeError: editPermalink is not a function
Link to my side: http://www.ausbildung-energieberater.de
Okay, it looks like
http://www.ausbildung-energieberater.de/wordpress/wp-admin/load-styles.php?c=1&dir=ltr&load=admin-bar,buttons,media-views,wp-admin&ver=3.5
is whitescreening out when I try to load it (those are the scripts that would normally be on the new/edit post screen)
Can you please check your server error logs? Or turn on WP_DEBUG in your wp-config file via
define('WP_DEBUG', true);
(just change the existing false to true)
— and then load that URL I linked and paste me the result? It should have some error messages.
Wait, no, scratch that.
Add
define(‘SCRIPT_DEBUG’, true);
to your wp-config file, does that fix it?
what do I need to do now? leave it in the SCRIPT_DEBUG state?
For the moment. This is not an uncommon occurrence, and we believe is a plugin conflict (some plugins leave greasy fingerprints behind even after they’re deactivated).
Hoping to have a permafix in the next day or two. Keep your ears to the ground and follow make.wordpress.org/core if you want to keep closer in the loop.