This time, it's the es_ES package. wp-includes/version.php Line 7: $wp_version = '3.9'; *sigh* Confirmed in <https://wordpress.org/support/topic/my-website-no-update-to-391?replies=10#post-5558849> Reported on <http://make.wordpress.org/polyglots/> Mel -- http://quirm.net http://blackwidows.co.uk