Over the last week or so everytime I have tried to update AVG I get "update failed" with the message that another installation is running and have no idea what that installation is. I recently installed AVG PC Tuneup 2015 and seemed to have had problems since. I downloaded the AVG uninstaller and deleted PC Tuneup but on trying to update again I am still getting the same failed message. How do I solve this. I am getting rather frustrated.