unsupported format
I have Aperture 3.4.5 and started a new library with importing of about 6000 images from some disks [DVDs] made at the time the pics were taken. Almost all came in just fine, but there are a bunch of them which have that triangle on black "unsupported format" - but all the other pictures are just fine. They were taken with a Canon 20D mostly and I did run reprocessing. I don't know why they come in unsupported but thought I would ask first here. Thanks.
Mac Pro, Mac OS X (10.7.5), 17G RAM