Thought I would post this to possibly help other users in the future. I was on a shoot yesterday where I had to do still and video with my K5. When i first turned on the camera It took a test shot and noticed an error message that said no card in camera but the SD card was in there. I reinserted the card and continued to finish the shoot. Upon returning home I put the ZSD card in to my card reader and got and error that there were errors on the card and would I like to fix it to include any bad sectors ...I bet you know where this is going. The fix erased the whole card! I should mention that the pictures and video where fine when I viewed them in the camera. I probably should just hooked up the cameras USB cable and transferred the data that way.
I've read somewhere on the forums that you should always format your cards in camera and to minimize the times you actually pull the card out of the camera. I've since reformatted the card in camera and tested it I didn't have any problems with it. The SD cards is a Panasonic LX 32gb class 10. I hope this never happens again but from now on I'll be a lot more cautious with my data. You have no idea how bummed out I am about this. The customer loved the pics and the video came out great viewing on the camera