Aperture 1.5.1: Don't Do What I Just Did

Don't do what I just did. It caused my Aperture library problems serious enough that I am currently restoring it from a back up. I don't believe I have lost any images or data, just suffered some inconvenience. Others may not be so lucky.

So what did I do? I imported read-only JPG images that lacked JPG extensions as referenced masters and then consolidated them using the Move option. The result was that although Aperture had them in its library (still as read only files), it was convinced that they were referenced but not readable, so showing me the broken link badge. The situation is unrecoverable as far as I could determine.

I am not sure which exact combination of events caused this, but I am sure that the missing extension is part of it. Only the images with the missing extension show the problem. Although I am sure that the read-only JPGs in the library will cause problems later.
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