Corrupt looking files on new CF card

I have just purchased a new sandisk Extreme Pro 16GB / 160 MB/s/ UDMA 7 card to use in my Canon 5D M11. I have downloaded the latest firmware version 2.1.2 and reformatted after installation of new firmware.

Images will load from card but when raw files imported to lightroom or ACR they appear corrupted.

Any one know of another fix?


I am having the same problem with thesame card on a Canon 1ds III.  I am not having the problem with an older extreme 16 GB card only the pro.  SanDisk replaced the fist disk I bought, but the replacement disk has the same problem.