- Changed the old "◊" marker in Catalog windows to a color icon that indicates whether the catalog has been modified;
- Cmd-Return and Cmd-Enter now work like Option-Return and Option-Enter;
- Fixed a cosmetic bug that occurred when choosing "Trim to selection" with the first item selected in a Catalog window;
- Images that are not available are ignored and skipped during a slide show (this includes both deleted pictures and images on unmounted volumes);
- PictureBank shows an alert if it's launched alone when FileMaker Pro is not running, telling the user that he needs an FMPro database to use PB; the alert can be switched off with a "Don't show again" button;
- The "Preview not available" message that shows up when an image's preview can't be created now says "Unsupported format" if the error is -8969 (this means that QT 2.5 doesn't support a specific graphics format, such as progressive JPEG).