Yes first delete and then redownload it. Then disconnect physically. And the easiest way to shut down your protect is to just exit them all from the taskbar by the clock. Usually if you right click them it will have a quit, exit, or disable option. Then run it again. Also could you get a screen shot with the exact error? In case you dont know the easiest way to take a screen shot is to hit the prt scrn button on the keyboard and then open MS paint and hit ctrl+v. Then just save it and attach it to your next post.