Unable to install iTunes
I have been trying to update my iTunes for over a year on my laptop. I can no longer even open any versions of iTune on it. When I try to install any Apple software including iTunes it starts out by "Validating Installation" then I get an error message that says "Object Already Exists" and when I click "ok" it just gives me the option to :finish" without installing anything. I have tried deleting any with Apple in it on my computer but that doesn't help.Any ideas on how I can install iTunes again. I have all the latest software downloaded ready to install.