Just got round to try using sd card with my panel due and getting the same error.
duetwifi firmware 1.17e
paneldue firmware 1.15c on 7" screen
8gb sdhc card fat 32
150mm idc cable
I have a kossel xl with duetwifi board. If I print a square that has a square hole in it the outside dimensions are perfect but the internal square is undersize by .4mm. If I then print a round disc with a hole in it the outside and inside dimensions are undersize by .4mm. Can the M579 command be used to fix this issue?