It sounds to me like your batteries are not completely 'seated'. More that once I have slid a battery into the hub and it sure seems like it is in OK, but the green lights disagree. I pull the battery out and carefully line up the base of the battery to the plastic hub base and slid it in completely for a solid connection. Another thing I used to catch myself doing is simply putting the battery in backwards to where the connect pins were on the wrong side (not end, but side). Flipped it 180 deg and the connection was able to be made. Therefore carefully seat the batteries and see if that helps.