Our new NCB-20 shuts down whenever we try to do a batch copy. We've tried fewer SD cards and different HDD's, all ExFat. When more than 2 cards are inserted the device automatically shuts down during the Batch copy / analysis phase. When batch copying just 2 cards, the process begins, but the device shuts down sometime thereafter. The SD cards have Blackmagic Micro Cinema Camera footage. Is this a known issue? Maybe a faulty device?