One thing to try, especially if you get an error that Mac OS X is ‘Unable to launch the application.’ is to do a get-info (command-I when clicked on the application) for the application and then check the box for ‘Open in 32-bit mode’. I have actually found running applications in 32-bit mode to resolve 3 different issues, only one of which was with Final Cut Server. Anyway, hope this helps someone else!