I am trying to update to Flash Player 11.8.800.168 and I get an error message (no number) and when I try it from inside the Flash Player Setting Manager, or try to reload an old version of Flash, I get the message that the Flash Player Setting Manager is open, when it patently is not (happens even after I turn it off, and with old version where the Manager is not even turned on). I have tried to follow instructions for removing a file in Windows/System32 that I found elsewhere on this site, but I get a message that the file is being used and cannot be deleted. I have removed old version of Flash from my computer. The only reason I even did any of this is FIrefox insisted I needed to update - now I have been completely taken down the rabbit hole away from the work I was doing! Thanks in advance for help. Let me know if you need any other info from me.