I just downloaded the new Itunes but now it won't open because it tells me that Quicktime isn't up to date and it says to reinstall itunes. So..I tell Itunes to fix itself and it doesn't work. The...

did you reboot?

No, you don't need to? What I had to do was completely uninstally itunes and quicktime on my computer. Now it works. Only took me an hour to figure it out.