Looks like your installation reverted to trial mode.
One tedious but good solution is:
AHHHHH! This is so effed! I was in the middle of a big project on CS5 and had begun organizing MTS files in my project. Now I'm on CS6 on a different machine with an external drive hooked up. It's impossible for me to associate the MTS files in my Prroject because of this "Private" insanity. So what am I supposed to do??!! Start OVER?!!!!!
This is exactly what I was telling myself like 2 weeks ago - "Don't ever upgrade in the middle of a project". Ha.
Well what kind of also screwed me was the first 27" iMac I received a few weeks ago that arrived with a defective heat sensor (fans were blowing like crazy).
I was determined to start and complete this project on this new machine. I didn't get too far, just made initial selects on a a few shoot dates.. but man, this is just so typical of major software and OS upgrades. It seriously never ends with this stuff. I've experienced these types of things for years. It never ends and you need to always be ready to get screwed by these types of things.