Had this problem ever since QT7.4.5 released (2++weeks ago). Only way to make livetype works again is by downgrading to AT7.4.1 and also you have to drop FCP603 to FCP602. FCP603 doesn't work without QT7.4.5, (Some1 says QT wont affect FCP, it sure does mate)
Set back is, if your project is already opened in FCP603, FCP602 won't open it. Unless you have backup set up and have not ponder long enough like me. 😟. If you on Time Machine, you can recall back also. How? Ask the guys using Leopard.
So for the next few weeks I will be without Livetype. All projects are already in FCP603. Apple, can you just make the projects backward-compatible to at least all V6 can opened regardless of version number. You are choking us here. I lost a lot time attending to the client's request using LiveType. Time = Money.
Still awaits the remedy from Apple on this issue. Maybe they look into this since NAB is over.