I'm having same problem. I didn't recently change battery but I had my disk drive cleaned out after a toddler put a ritz cracker and a paper clip in the drive slot.
The technician cleaned and checked it and it functioned well (at least mechanically).
Now when I tryed to save a sequence to disk, it goes fine until the end of saving (after "saving PCM data") then it displays the "data error message".
Please help.