I'm thinking it is the Rolling code issue. Mine couldn't work until I actually had to go to my main unit IN THE GARAGE and press a certain button (I cannot recall at this time). Then it worked.
Yes, I agree programming these Homelinks are overly complicated, but they do work.
'08 Town and Country LTD 4.0L
Built Sept. 2007, took delivery Dec. 2007
STATUS: Returned March 1, 2010
48,500 kms on the odo
Brilliant Black w/ grey leather and suede inserts
MyGig, NAV, VES, Trailer tow, Power 3rd Row
Sunroof and Swivel n' Go