Apple has posted
Pro Application Support 4.0, an update for its suite of pro applications. The update is available from the Software Update system preference or for download from the Apple Web site.
The update is intended for all users of Final Cut Studio, Final Cut Pro, Motion, Soundtrack Pro, DVD Studio Pro, Aperture, Final Cut Express HD, Soundtrack, Logic Pro and Logic Express. The update “improves general user interface reliability,” according to Apple.
System requirements call for Mac OS X v10.4 or later.