OuchMyAppendix

@gavin27 : Here is the whole function to copy/paste. Original line is commented out and the modification is present.

function CPTOrderPosts($orderBy)
    {
        global $wpdb;

        $options = get_option('cpto_options');

        if (is_admin())
                {
                    if ($options['adminsort'] == "1")
                        $orderBy = "{$wpdb->posts}.menu_order, {$wpdb->posts}.post_date DESC";
                }
            else
                {
                    if ($options['autosort'] == "1")
                    	// Here is where the edit goes
                    	$orderBy = "{$wpdb->posts}.menu_order, " . $orderBy;
                        //original code is commented out
                        //$orderBy = "{$wpdb->posts}.menu_order, {$wpdb->posts}.post_date DESC";
                }

        return($orderBy);
    }

@op – Thanks so much for this, I was having an issue with this plugin changing the order of attachments on my page and this fixed it. Kudos!