Every time I delete/add a security module, it adds yet another Security menu itm

Security is not working correctly in SCv6 6.00.018. It is sending the wrong emails to the wrong people and allowing new users to be administrators. Each time I delete the security module, and start over, trying to learn what I am doing wrong, (or to learn how to make a more complete bug report) it adds a “Security” menu item and child items to my existing menu app (built by me). I have gone into the menu app and deleted all the Security menu items, and saving, and regenerating, but, the extra “Security” menu items keep reappearing. How do I get rid of them?