If you install Motion 2.1 after installing the Final Cut Pro 5.1.2 update, Final Cut Pro may subsequently fail to open.
To remedy this situation, take the following simple steps:
This situation can occur if you install Motion 2.1 by running the installer found on the Final Cut Studio main installation disc. If you install Motion 2.1 by running the installer found on the Motion installation disc, the issue will not occur.