Hi All! I used my new A7RII this weekend and captured about 800 images to a Sony SD XC 64 gig card. The last 50 or so images wouldn't import to Lightroom and no thumbnails would appear on the import screen for them. The program said the files may have been corrupted. When I place the card back in the camera the thumbnails show on the camera screen. No thumbnail will appear when viewing the files in Apple Finder either. Anyone have the problem? Are the files toast or is there anything that can be done to retrieve them? Thank you!