Hello George,
your damaged image probably is from your most recent import. I'd suggest to try to open the master image files from your recent import in another program e,g, Preview.
If your library is managed . the masters included in he library package, you will find them by ctrl-clicking the the Aperture library package in the Finder and selecting "Show package Contents".
Then open the "Masters" folder. This folder is organized chronologically by the import date. So your corrupted image most probably will be in the folder with the most recent date.
Browse this folder and try to open the images in Preview (or your camera's raw converter, if you are shooting raw).
If you cannot spot the culprit this way, then you will have to try to find the corrupted image by creating previews for subsets of your images in Aperture.
- Turn on the Activity Viewer (Window -> Show Activity) to see which images Aperture is processing.
- Select some of your recent import, ctrl-click the images and select "Update Preview".
If Aperture crashes again, you will know the corrupt image is one of the currently selected.
Restart, and try the same for half of the selection, until you know which image it is.
Regards
Léonie
It will be hard work to find the image ...