Hi all, I'm having a problem with the latest WP version. Fresh installations of WordPress 3.6 throw fatal errors when trying to install/update any plugins & themes. WP 3.5.2 works perfectly fine, but if I update it to 3.6 the same errors occur. Specifically, I'm getting the following error: Fatal error: Call to undefined method Plugin_Upgrader::init() in /<path>/wp-admin/includes/class-wp-upgrader.php on line 394 / 421 / etc or Fatal error: Call to undefined method Theme_Upgrader::init() in /<path>/wp-admin/includes/class-wp-upgrader.php on line 744 My VPS-3 runs Apache 2.4.6 with PHP 5.4.17 on suPHP mode (suEXEC is on). I temporarily increased the php memory execution limit to 1024M to no avail. Any ideas?