Direct stream mk2 to Innuos

Hi, I am trying out a Direct stream mk2 connected too a innuos zenith mk3 using usb, it plays 24 bit 192 but not dsd 64 or dsd 256, i have to unplug the usb to get it working again on 24 bit 192, it works ok on my directstream mk1, has anyone had this type of problem.

many thanks