Beachball after installing iTunes 11.3
After installing iTunes 11.3 on my Macbook Pro Retina running OS X 10.9.4, I get a beachball that never ends. I forced quit, restarted, and got another beachball. After another force quit and a restart, I still get an endless beachball whenever starting iTunes 11.3. How do i downgrade to the previous version? Is there any other fix to this at all? I rely on iTunes and now it's dead software.