The xLights converter works for LOR files IF IF IF (that's 3 IFs)
Your channels must be setup in a way that xLights understands. As in - if you have already got sequences using DMX Universe 1 or 2, they won't convert until xLight gets revised.
The network configuration seems to need to be all "Regular" network and "Aux A" network.
My converted test file only worked after I changed it.