klas_e

A quick fix is to open post-types-order.php ange change the CTPOrderPosts function on line 85:

if ($options['adminsort'] == "1")

to

if ($options['adminsort'] == "1" && $query->query_vars['post_type'] !== 'attachment')

Full function after change:

function CPTOrderPosts($orderBy, $query)
    {
        global $wpdb;

        $options = get_option('cpto_options');

        //ignore the bbpress
        if (isset($query->query_vars['post_type']) && ((is_array($query->query_vars['post_type']) && in_array("reply", $query->query_vars['post_type'])) || ($query->query_vars['post_type'] == "reply")))
            return $orderBy;
        if (isset($query->query_vars['post_type']) && ((is_array($query->query_vars['post_type']) && in_array("topic", $query->query_vars['post_type'])) || ($query->query_vars['post_type'] == "topic")))
            return $orderBy;
        error_log(($query->query_vars['post_type']), 0);
        if (is_admin())
                {
                    if ($options['adminsort'] == "1" && $query->query_vars['post_type'] !== 'attachment')
                        $orderBy = "{$wpdb->posts}.menu_order, {$wpdb->posts}.post_date DESC";
                }
            else
                {
                    if ($options['autosort'] == "1")
                        $orderBy = "{$wpdb->posts}.menu_order, " . $orderBy;
                }

                //);
        return($orderBy);
    }