OMG, I just reinstalled Studio 14 as well because I upgraded the OS and dual booted so I could migrate bit by bit to a 64-bit OS.
I have a valid serial number right from the Dazzle HD package on the installation disc. I was banging my head against the wall because I couldn't find a solution to this problem and I have a video to edit.
Are you still able to generate new keys, my passport number changed on the new OS install which causes the problem. I have all my info available. Thanks