Are the CF cards < 1GB and formatted as FAT?
I have a 1gb card and a 8gb card, both worked before, formated as fat.
Just walked up to a nice old win2k machine I have, formated the card as FAT16, copied the file back on and tried NAND restore and only difference now is that it takes longer before I get the error message saying "not exist file".
I also tried backing up the present nand, just to see if the zaurus would talk to the cf card and I get an error claiming there is no free space.
I was thinking maybe the card is fried but it works fine on Mac, wink2k and winxp
UPDATE:
I had a 512mb card which seems to be working ok, weird as I have used the 1gb one before.... Go figure.