[Entmister (Julian)]

I have a Celestron Nexstar 6SE, I purchased a Starsense Autoalign, which supposed to compatable with my mount. when connected (as per instructions) I get an error mount no found, can not initialize. message said to check connections and reboot. Still not finding my mount. Celestron replaced the the hand control and still the same error. I went back to the shop and they checked and gave me a new Starsense, which worked correctly on the demo Nexstar. Still the same error on my mount. does anyone have any knowledge or a similar experience? As it is its an expensive paper weight.