Can I ask why you have to "reinstall" iTunes? Apps like iTunes are so integrated within OSX removing them can be problematic.
At any rate, this is a forum for MacBook Pro Hardware. You should take your question to the iTunes for Mac forum.
After trying pretty much everything I could, I resorted to remove and restart the AMDS, and followed the instructions on here and that told me to uninstall and reinsert itunes.
and sorry for putting this on the wrong forum.