Update and hopefully final post on my adventure:

It WAS the Android radio.
In Settings/GPS/Navigation, the navigation program selected was Google Maps.
I changed it to iGO and the program instantly ran flawlessly, BUT the audio from the radio would go off while iGO was on the screen.
I went back and selected Torque app under Settings/GPS/Navigation; I didn't check to see if I could select "none".
THAT worked, iGO runs perfect, the radio audio stays on.

Thank you to those who posted tips and links. The Primo download with TomTom maps is working on my Android 4.4.
I didn't find anything on this website (or others) about the radio settings interfering with iGO or other navigation, other than actually turning ON the GPS function!
Hopefully if someone is having the same problems they will directed to this thread rather than a shotgun blast of "search the forums and read everything you find", but it should show up in a websearch.