Hi,
I think it's your sd card.
I have a few of them. Sanddisk, Panasonic and a couple of other brands. (I use them for my computers as backup for other things as well)
I noticed one of my Sandisks does the same thing. It started doing it a few weeks after I started using it in the kn7. I found that if I unplugged it, and plugged it back into the kn7, the keyboard would recognize it again. I also put the write protect switch to ON when I wasn't saving, to avoid accidently formatting the card.
If you accidently press "Yes" to that message , you will erase your card, I did it, but fortunately I had it backed up in my computer.

best wishes
Rikki


[QUOTE]Originally posted by Alain:
[B]Sometimes when I try to load a file from the Sd card in the kn7000 I get this message :
"using sd format will erasy any current data on the sd" and I even didn't push the format buttom.