Add Media buttons doesn't work in 3.9

Seems like an issue with WPML (3.1.4), when I disabled the plugin the media manager worked again.

This problem has been fixed today =D

Have a look here and download the new beta version at the bottom of your wpml download page

https://wpml.org/2014/04/status-wpml-wordpress-3-9/

That’s good news, but how do I install the update? When I use the WP installer I get the message: The package could not be installed. No valid plugins were found. And your own Installer plugin doesn’t says my 3.1.4 WPML CMS is up-to-date.