Strange memory card behavior
I went out this afternoon to a local lake to practice my BIF and hand holding techniques on some friendly gulls. I took about 200 images with my 1DX using a Lexar Professional 800x 16GB card which I have used many times before. The card had a few images on it already. I was able to view and delete images as I was taking them (to get rid of the out of focus ones). I had the camera set to RAW and only had one card in the camera. When I returned home I took the card and plugged into a Delkin Devices reader and my MacBook Pro. To my surprise neither ACR or Photoshop will open the images. I get a message that this file type is not supported. They appear as CR2 files but will not open. Also I put the card back in the camera and it will not display the images either. Shocking since I had just looked through them in the camera 15 minutes earlier. The images that were on the card from an earlier shoot are still there and can be viewed normally.
I would love to know what happened here and can I recover my images?