Jaybird Run Charge Box

My Jaybird run charge box has the two exterior (earbud) lights flashing red, even though there are no buds inside.  When I charge the box, the earbud lights turn off, and the central light flashes green (eventually going solid green when the box is fully charged).  However, the earbud lights don't flash when I put the earbuds inside, and don't appear to charge.