Sample Set Keeps Corrupting

[HerrTipple]

Hi,

Last night I was working with my ES2 and when I was finished I pressed 'write all samples'. The system got to 98% and then glitched out. I pulled out the batteries and reset and found the samples set was corrupt. I was pretty annoyed, but glitches happen so I made a copy of my pattern set (was getting worried) and then recreated the sample set using one of the editors and loaded everything back up again. I chopped some of my samples up again (the editor I used on my Mac does not have a chop feature) and pressed 'write all samples' again and it glitched out again, this time at 80%.
I have tried everything I could think of to fix this; I did a factory reset then went back to the current firmware version, I reformatted the SD card and then copied everything over again and still every time I boot up, re-chop my samples and then press 'write all samples' it glitches out again at 80%.

Is there anything I can do or is this a warranty fix?