I apologize if I posted the question in the wrong forum but questions always get answered quickly when I post here. I am playing with Aperture (recently downloaded from app store) and am loving it. I imported about 200 pics from my other PC to this iMac using a USB storage device. They raw files (canon) are all stored in my Aperture library and I am able to see everything in the preview as thumbnails. But when I click on the pics and ask to "Locate Referenced Files" I always get the message that "The selection does not have any referenced files" Is this an error? It should tell me that the file is stored in the Aperture library under the Master directory, no? Thanks so much.