Controller sw crashing the bus??

I have a problem with two sw version i created v1 and v2 on (MC42) ,there was no major change other then changing the time out to" Not Used" on other controllers(air compressor and air dryer ctrl's) on the j1939 bus. when i flashed 36  it shows contact but its crashing the bus( i cannot read any message on the pcan unless i unplug the mc42) once i flash back to 35 everything works except the (air dryer and the air compressor) .

please help