Haven't seen any problems like this specifically related to an update.
But maybe there's a way to recover using your backups of the photos. Have you tried re-importing an original of a "damaged" photo from your backup copies to see if the problem persists? Or have you tried restoring an Aperture library backup from a vault or a copy of the library?
I am sorry to hear about the lost photos. There must be something terribly wrong. Updating Aperture will not reduce the size of your photos.
From which version have you been updating? Is your profile signature correct? Are you working with Mac OS X (10.7.2)?
Is your library referenced or managed? How do you see the changed size of your raw images? I cannot think of any way that a raw file will be processed to show a smaller size?
What exactly did happen, when you upgraded Aperture? When you upgrade, usually the Aperture library will be upgraded, when you launch the upgraded version the first time. Did you get any warnings, error messages, crashes after the upgrade? Did you try any trouble shooting, repairing, rebuilding of the library afterwards?
Hi LeonieDF & Phosgraphis,
I'm running OSX 10.8.2 with Aperture 3.4.3.
The Library is entirely managed by Aperture with no originals referenced outside the Library.
The photo's affected just showed up in the Aperture browser as blank (black) but you could still see all the Metadata (camera, lens, shutter speed etc.) via the 'Info' tab. The photo's affected also displayed a reduced file size i.e. normally 13.54MB for a 2592x3888 pixel photo, compared to about 1MB for the corrupt file.
I tried reprocessing the affected one's from original - didn't work.
I tried repairing/restoring the Aperture Library by pressing ALT-CMD and starting Aperture - didn't work.
I finally used Time Machine to find an old backup of the Aperture Library from a few months ago (pre-Aperture update), updated the Library location in 'preferences', then exported all the originals to a temporary folder. Put the Library location back to the original and imported the RAW files again.
That appears to have sorted it! That's the trouble with Mac's; they're so damned reliable it's a real shock when they have a Windows style episode...
Thanks for the advice