Welcome to the group.
I recommend calling Sony tech support right away.
Assuming you are in the United States the number is (800) 883-6817 then press choices 2,5,2
They are very helpful.
My second recommendation is as soon as you can to get the 128gig memory pack for the side and not use those cards. In my opinion they are way to fragile.
Have you tried pluggin the card into your computer sd reader and what does your computer say?
You may be able to plug the card into your computers memory card reader and do hard disk recovery. I was able to recover my entire video hard drive after reformating it with one of these recovery programs.
John
John Lenihan
LeniCam Video Productions
http://www.lenicam.com