Sandsand

My problem is solved.
It was an hosting issue, a php file called “prepend.php”.
This default code :

<?
?>

don’t work in php 5.3 and cause the bug with the media library.
Replacing the first line with

<?php

solve my problem.

Yes

No more answer, problem is still here with 3.5.1. I’ve installed a plugin, “faster image insert” for continuing to blog.

Forget to tell that I always do manual upgrade. I use wordpress since 2005, and I’ve keep this habit.

Try to diagnose javascrip errors, the only one I found is this :

[18:08:36,852] L’utilisation de l’attribut ? specified ? d’un attribut est obsolète. Cela renvoie toujours ? true ?. @ https://blog/wp-includes/js/jquery/jquery.js?ver=1.8.3:2

Line 2.

In english : Use of attributes’ specified attribute is deprecated. It always returns true.

My host said to me mod_pagespeed is not activate on my server.

Thank you for your reply.

Replacing
define('CONCATENATE_SCRIPTS', false );
With
define('SCRIPT_DEBUG', true);
Don’t change anything.

And there is no informations about mod_pagespeed in my phpinfo, so I assume my host does not use it.