Aperture installation deleted all image files from MacBook Pro.
After installing Aperture 3, I noticed that all the image files I had on my MacBook Pro immediately disappeared. These were stored in various locations throughout my computer depending on subject (e.g. "Emergency Response Training", "Summer 2009", "Car Restoration" and so on). A small number were in the "Pictures" folder but most were kept in other locations. All the folders and subfolders where these images were stored are intact but the images are gone. There is simply a "thumbs.db" file inside and the folder size is about 6 kb on average.
I did nothing other than install Aperture (no importing or library creation) and none of these images or folders are in the Aperture library. A similar thing happened with iPhoto where all my iphoto thumbnails show up but there appears to be no actual photo. No images prior to Aperture installation appear anywhere on the Macbook using tailored queries with "Find".
Apple support indicated that Aperture would not search out these photos unless prompted and would never delete them but It's hard to imagine how else this could have happened, as it happened only during installation (subsequent photos are fine) and targeted all image files in every location. Hard drive is new and indicates no problems.
Any ideas what might have happened - and, more importantly, how I might be able to recover the missing images? Unfortunately, my upgrade to Lion obliterated my DNS 321 back up disk, as well, and I don't yet know if I can recover those files.
Thanks for any help you can offer.
Aperture 3, Mac OS X (10.7.2)