Description
When you're attempting to change/update CMS > Site Navigation you may encounter such error Notice: Use of undefined constant DON’T_MATCH_WITH_ITEM_MSG - assumed 'DON’T_MATCH_WITH_ITEM_MSG' in /home/public_html/admin/admin_menu_item.php on line 27
Solution
http://www.viart.com/downloads/admin_menu_item-4.1.zip
Extract 'admin_menu_item.php' into 'admin' folder of your shop replacing existing file. Please do not forget to make a backup copy of the current file in case something goes wrong.