Add-on box closes whenever I click in it/on it
So, I updated to 3.6.3, and then had a friend come over and use my computer. I assumed that he had totally jacked up my noscript settings as that add-on wasn't functioning correctly. When I tried to click on the add-on's box that pops up when accessing from the browser, it closed promptly. Again, I chalked this up to the friend. Uninstalled firefox, deleted all add-on's, bookmarks, etc. Reinstalled firefox, still couldn't get the add-on box to respond, it continually closes whenever I attempt to click on it/within it. Added noscript again, it works fine. What's going on with the add-on box?