Apple posts Motion K-base articles

Importing Motion projects into DVD Studio Pro
[docs.info.apple.com]
You can use Motion to create animated graphics and video that can be used for a variety of purposes in DVD Studio Pro

Importing Motion projects into Final Cut Pro HD
[docs.info.apple.com]
Whether or not you have Motion installed, you can import Motion projects into Final Cut Pro HD in the same way you would import other media.

Exporting clips or sequences from Final Cut Pro HD to Motion
[docs.info.apple.com]
Final Cut Pro HD clips and sequences can be exported as Motion projects using the Export to Motion Project command.

Motion: Images from Final Cut Pro may be a different size
[docs.info.apple.com]
Images exported from Final Cut Pro to Motion appear slightly larger than in Final Cut Pro. This happens when using Motion with Final Cut Pro 4.0 or later, including Final Cut Pro HD (4.5).

Selecting a mask and pressing the Up and Down Arrow keys may cause Motion to unexpectedly quit
[docs.info.apple.com]
If you select a mask object in the Canvas that is the bottom-most item in the project, pressing Up Arrow then Down Arrow may cause Motion to stop responding or "freeze". If there are any non-mask objects below the mask, Motion continues to work.

Motion: Replace Media File in Media tab replaces audio-video file with video only
[www.info.apple.com]
The Canvas contains a file that includes both audio and video. You try to replace it with a file that only contains video by clicking the "Replace Media File" button.

Motion: Incompatibility with Magic Bullet plug-ins
[docs.info.apple.com]
If Magic Bullet for AE plug-ins are installed, Motion may stop responding or "freeze."

Motion: Maximum number of filters that can be added to a single object [www.info.apple.com]
The maximum number of filters that can be added to a single object in Motion is 64.

Motion: Color value change of LiveFont in Canvas results in inaccurate values [www.info.apple.com]
Learn about an issue that can occur when making color changes to a LiveFont object in Motion.

Motion requires QuickTime 6.5.1
Some Motion documentation mistakenly indicates that the minimum requirement is QuickTime 6.5.
[docs.info.apple.com]
Motion actually requires QuickTime 6.5.1 or later.

Motion: Supported computers and video cards
[www.info.apple.com]
Learn the system requirements for using Motion, including how to tell what video card you have in your computer.

FireWire video out does not work after installing Motion
[www.info.apple.com]
If you have earlier versions of Final Cut Pro 4 installed, FireWire video out does not work after installing Motion. If you switch to the Finder then back to Final Cut Pro, you'll see a "general error" alert message.