Unsupported Image Format Apt V3.4.3

I have also noticed a lot disk activity and when Aperture is open the application is saying it's processing.

Where is your Aperture library located? On your system drive or an external drive?

This looks like your hard drive with the library may have a problem. I'd recommend to make immediately a backup of the drive, if you do not have one, and if it is your system drive, make also a bootable clone with carbon copy cloner or super duper, just to be sure.

Once you have working backups, check if your black images really are missing or unreadable. Is your library referenced or managed?

Does your wife only read the library, or does she also modify the library? In this case I'd recommend to repair the permissions using the "Library First Aid Tools", see Repairing and Rebuilding Your Aperture Library: Aperture 3 User Manual

When your wife edits and modifies the library, you may be no longer the owner of the modified items.

If you want to share a library, it should be on a disk with the flag "ignore ownership on this volume" set.

You can keep a shared library on an external drive or a disk image, see this article on how to do it:

iPhoto: Sharing libraries among multiple users

Can you clarify what you mean by " is your library referenced or managed" ?

This refers on how you import your original images. Do you store them inside the Aperture library (managed) or outside, and Aperture references them in their original location?

Léonie

I look up how to set ignore ownership.

"Ignore ownership" can only be set for a hard drive or a disk image, not for a folder, for example - the "Get Info" for my media drive looks like this:

This cannot be done in the Shared folder. The article I pointed to, explains how you can put a writable disk image into the "Shared" folder and set the ownership flag for this disk image. Then both can red and write the library.

When I originally installed Aperture I allow the install program to set the Aperture references, what should I have it set too?

I was referring to the settings in the import panel, when you import images into Aperture: in the "Aperture" brick of the import panel is the "Store Files" option; if this is set to "In the Aperture Library" you should be o.k. - all original images safely contained inside Aperture and managed by Aperture. I asked about "referenced" or "managed", because it can happen, that images get accidentally deleted, if they are stored outside the library.

Under "Get Info" I have set the permissions as read /write for my wife - to be honest she rarely opens iPhoto, so maybe best to set the permission to read only.

That is a good plan. Then you will not need the additional complication with ignore ownership, if she does not read and write to the library.

Try first the three "First Aid Tools" to repair any damage that may have been done to the library, select the library and hold down the ⌥⌘- keys while double-clicking the library.

Repairing and Rebuilding Your Aperture Library: Aperture 3 User Manual

Ran the repair, it found no issues - looks like it was a permission problem between users. Should I create a disk image on my internal hard drive and copy my library to it and set the perissions to ignore ownership?

Good,

yes, a disk image in a folder that you both can access should solve this. make it large enough to hold all your images that you want to take in the next couple of years. How long did it take to collect the 57GB library? If that is one year worth of images, 250 GB should be o.k.

You are welcome, good luck!

Léonie