diff --git a/includes/modules/payment/cop.php b/includes/modules/payment/cop.php
index b90a818..dc1f43f 100644
--- a/includes/modules/payment/cop.php
+++ b/includes/modules/payment/cop.php
@@ -1,19 +1,14 @@
 <?php
-
-//
-// +----------------------------------------------------------------------+
-// |zen-cart Open Source E-commerce                                       |
-// +----------------------------------------------------------------------+
-// | This source file is subject to version 2.0 of the GPL license,       |
-// | that is bundled with this package in the file LICENSE, and is        |
-// | available through the world-wide-web at the following url:           |
-// | http://www.zen-cart.com/license/2_0.txt.                             |
-// | If you did not receive a copy of the zen-cart license and are unable |
-// | to obtain it through the world-wide-web, please send a note to       |
-// | license@zen-cart.com so we can mail you a copy immediately.          |
-// +----------------------------------------------------------------------+
-// $Id: cop.php
-//
+/**
+ * COD Payment Module
+ *
+ * @package paymentMethod
+ * @copyright Copyright 2016 ZeneAll
+ * @copyright Portions Copyright 2003-2016 Zen Cart Development Team
+ * @copyright Portions Copyright 2003 osCommerce
+ * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
+ * @version $Id: Author: Zen4All  Mon Oct 24 cop.php
+ */
 
 class cop {
 
@@ -45,7 +40,7 @@ function update_status() {
     if (stristr($_SESSION['shipping']['id'], 'storepickup') == FALSE) {
       $this->enabled = ((MODULE_PAYMENT_COP_STATUS == 'True') ? true : false);
       $check_flag = false;
-      $check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . MODULE_PAYMENT_COP_ZONE . "' and zone_country_id = '" . $order->delivery['country']['id'] . "' order by zone_id");
+      $check = $db->Execute("select zone_id from " . TABLE_ZONES_TO_GEO_ZONES . " where geo_zone_id = '" . MODULE_PAYMENT_COP_ZONE . "' and zone_country_id = '" . (int)$order->delivery['country']['id'] . "' order by zone_id");
       while (!$check->EOF) {
         if ($check->fields['zone_id'] < 1) {
           $check_flag = true;
@@ -68,6 +63,11 @@ function update_status() {
         $this->enabled = false;
       }
     }
+
+    // other status checks?
+    if ($this->enabled) {
+      // other checks here
+    }
   }
 
   function javascript_validation() {
@@ -113,7 +113,12 @@ function check() {
   }
 
   function install() {
-    global $db;
+    global $db, $messageStack;
+    if (defined('MODULE_PAYMENT_COP_STATUS')) {
+      $messageStack->add_session('COP module already installed.', 'error');
+      zen_redirect(zen_href_link(FILENAME_MODULES, 'set=payment&module=cop', 'NONSSL'));
+      return 'failed';
+    }
     $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) values ('Enable Cash On Delivery Module', 'MODULE_PAYMENT_COP_STATUS', 'True', 'Do you want to accept Cash On Pickup payments?', '6', '1', 'zen_cfg_select_option(array(\'True\', \'False\'), ', now())");
     $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, use_function, set_function, date_added) values ('Payment Zone', 'MODULE_PAYMENT_COP_ZONE', '0', 'If a zone is selected, only enable this payment method for that zone.', '6', '2', 'zen_get_zone_class_title', 'zen_cfg_pull_down_zone_classes(', now())");
     $db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('Sort order of display.', 'MODULE_PAYMENT_COP_SORT_ORDER', '0', 'Sort order of display. Lowest is displayed first.', '6', '0', now())");