So I thought I might try to reinstall it somehow. When I would try to uninstall it, it would never work. So I used a cleaner to wipe all of the iTunes information. The strange thing is, one folder never disappeared, called iTunes.Resources. Inside this folder, there was one other folder which I couldn't access and seemed to be corrupted. Its name was pt.lproj. Since then I've tried renaming it, whatever, but there is no way to get rid of the iTunes.Resources folder, which I think is causing the problem.
I reinstalled a copy of iTunes but gave it a different folder name, "iTunesSet". Inside this one's iTunes.Resources, I am able to open the pt.lproj file. The other one is not accessible. Something is clearly wrong, preventing me from FULLY uninstalling the old copy of iTunes. So now every time I start it I get a critical error. Please help!! It will be so appreciated.