[Steinway]

Thank you, I understand. So the "File not found" error is actually expected when the device is running low on memory? I can't really see how this could be the case for me, thoguh, as I had no other background apps running at the time (except for Chrome, and maybe Acrobat reader). I haven't really used any apps other than MSP after downgrading.

I'm pretty sure I unchecked "manage my files" when importing the .msp file, but of course, I may have forgotten during an earlier backup, so that the duplicate files have been there for some time without me noticing.. But I'm confident I have always unchecked "backup audio", as I was aware of the problems with the external SD card, and also not wanting the backup file to be unnecessarily large - so I don't see why the backup would even try to write anything to the external card.