I have a 2012 iMac with Java 8 and DecoderPro running version 4.26. ? I have a Digitrax PR4 attached to a programming track and I have a Sprog 2 attached to a second programming track. ? I would like to try to sort the Digitrax DN163K1B decoder first.? I converted the loco back to DC and it runs fine in forward and reverse. ? ? When I install the DCC card, DN163K1B, the locomotive will only run forwards.?