Final Cut Pro HD 4.5 may not recognize Motion (.motn) files when you open a Final Cut Pro project on a different computer than the one used to create it. This issue occurs if you used Media Manager in Final Cut Pro to collect a project containing Motion files, and moved the project to another computer. This can happen with files created in Motion 1 or Motion 2.
To resolve this issue, you will need to relink the Motion files on the second computer before opening the Final Cut Pro project. To do this:
This document will be updated as more information becomes available.