Aperture 3 and Canon 7D import issue

[ericpj14]

I am having a problem when I import my photos into aperture 3. I have the latest update to aperture 3, raw files, and latest camera firmware as well. I have tried 3 different CF cards as well. When I import a new project only a fraction of the photos are imported and aperture says that is wasn't able to import them all. I can repeatedly do an import and all of them will eventually make it into the library, but obviously this is not how it is supposed to work. I have tried importing into iPhoto 11 and everything works fine. I have reinstalled Aperture 3 as well and created a test library in case of library corruption. Any insight from anyone would be great. I have an airshow I am shooting this weekend and this could be a huge pain. Thanks!!