Loss of data from card that worked fine the night before

Here is my situation.

Two night ago I imported a clip from a SDXC card. The clip was about 90-minutes long. On the same card were 3 other clips. The clip I need two days ago was imported fine into FCP, no issues at all.

Today, I need the other 3 clips to import and now I'm having issues on both of my iMac's with importing the footage. I have provided a link to view the screenshot of what I get.

I thought at first my Panasonic AC 160 needed to repair the clips. When I put the card back in the camera, it prompted me to repair the files, and when it did it erased them. Great. Luckily I recorded in simul mode and had a back up.

When I try and import it shows Clip #1, but it shows Clip #2, #3 and #4 like they're not there any more.

It freezes on this screen and completely shuts down my FCPX. I can live without clips 2 and 3, but not clip #1.

It worked fine 2 days ago. I wonder what would be causing the issue now?

here is where I get stuck:

fastpitchscoutingreport.com/wp-content/u...13/06/ScreenShot.png