I am trying to bring all my iPhoto libraries (one for each year) together into one REFERENCED Aperture library. I have the iPhoto libraries on an external hard drive and want the Aperture Library on my main drive. Whe I go to the Import window I do see my external hard drive on the list of drives, but the files do not show up. It shows folders and any readable files in the folders, but not the iPhoto Libraries, which are not in any folders. I am running out of space on my hard drive, so want to do a referenced import, not a managed one, but I can't seem to get it to work. I have tried doing the copy drag and drop method (holding command+option and dragging and dropping from finder to Aperture, but it still copies the whole library to the main drive, it does not reference it). Help, please!