This ProKit Update fixes the following minor issues:
- Improved support for PopOver style tooltips.
- Improved support for Font Smoothing.
- Addresses an issue with an unwanted gap between a menu and submenu.
- Fixes leaks and improves stability for the color picker and timecode interface in Final Cut Pro and Motion.
- Improved compatibility when importing assets from older versions of Soundtrack Pro.
- Fixes an issue with the scrubber appearance in Logic Express and Logic Pro.
- Addresses AppKit related crashes in Motion.
Apple: ProKit Update
Unfortunately, I installed the update last night, and Motion continued to crash regularly for me!