I just installed the Firefox add-on 'Self-Destructing Cookies' to my Win 7 laptop. It seems to be working okay, but the icon doesn't show up in my addon's toolbar (even though that item is checked in the Options section). I even checked the 'Customize' section to see if it was there so that I could drag it into position, but not there either. I even uninstalled it and reinstalled the add-on, but that didn't help. Any suggestions?