I had this same thing occasionally it would crash and state the error listed above but turns out it was a corrupted theme i had in shuffle so whenever it would load the theme it would crash. So if anyone is dealing with the same thing try and select your themes and turn it off and on and see if...
My 3ds is crashing and its fixed by deleting the 0000008f file but then it crashes again and i go into the sd and it has that same file i deleted. It could be a faulty sd card but any help much appreciated!