The extreme frustration with trying to make the loader work finally resulted in hooking up one of the other remotes (not the one I had been trying to clone) and the loader worked. Somehow the remote is preventing the loader from finding the TIU. Two days of frustration behind a bad remote that works fine on the layout. Sure wish these MTH problems were easier to resolve; even with The Book of Barry it can drive one to drink.
Now how to convince MTH the remote is bad even though it works ... hummmmm ....