Hello Kirk.
When i insert the SanDisk Extreme Pro udma7 16GB card in my MacBook Retina 15”, media 2014 2,8GHz IntelCore i7 running OSX 10.9.4 PM 5 15800, with my new SanDisk Image mate All-In-One USB3 Card reader, and try to ingest or copy the pictures the computer says I did not eject the card properly, and the card will not function. I can see the pictures if i use iPhoto but i can´t import the pictures, when i try the same thing happens. The same card will function if I use a SanDisk 8-1 USB 2 card reader on the same computer. I have talked to Apple and SanDisk but no help, maybe Camera Bits can help me?
-Kim.