Aperture 1.5.2 addresses issues related to overall reliability and performance in a number of areas, including:
Contact sheet printing
Smart Albums
Watermarks
Lift and stamp
Image export
Versions created using an external editor
This update is recommended for all Aperture users.
Note: If you haven't already done so, it is strongly recommended that you also download the Digital Camera RAW Support Update 1.0.1, which is available on the Apple Downloads support page at http://www.apple.com/support/downloads.
The Digital Camera RAW Support Update provides RAW file format compatibility for the following digital SLR cameras:
Canon Digital Rebel XTi / 400D / Kiss X Digital
Nikon D80
Pentax *ist DS
The Digital Camera RAW Support Update also addresses the following issues:
Handling of large Canon RAW files (.CRW)
DNG compatibility on Intel-based Macintosh computers
Lines sometimes appearing in images exported from Aperture