On my website http://vale.homelinux.net/wordpress/?cat=2
I get the following error on the sidebar when browsing the categories:
Fatal error: Only variables can be passed by reference in /var/www/wordpress/wp-includes/classes.php on line 629
I am using the latest WP version as well as the WP Gallery2 plugin, on MySQL.
Is this a known bug, or specific to my system?
Thank you for your assistance!