SOLVED! (whew)
The connection information was wrong below the path.
I went into RSLinx (after pulling out my hair) and noticed that the Backplane information did not match the Source Link field.
Seeing my CNB Master had a link ID of 12 in Linx, I put this in, and it works!
Thanks for the help guys! In the manual, source ID is not explained, but after some Google searches, I found other notes about it.