We are updating a tow car group from 16 bit to 32bit processors and IOC board. We completed the first car but as it goes on to the DOL it generates 2007 faults. Fills fault buffer with 2007 faults but continues to run. The 2nd car runs great on Door Disconnect but it generates to 2007 faults as well, but then goes down CKRSHUTDOW about every 3rd run. HELP PLEASE!!