After taking a short road trip out of the metroplex yesterday in my Model S, I stopped at the Southlake, TX supercharger to charge for the final leg home. The supercharging began, as normal, drawing about 90 kW. After a few minutes, however, the main display switched to "Charging Stopped." Plugging and unplugging and switching stalls didn't help. Each time I plugged in and car would display "Charging will begin momentarily," for a few minutes, and then switch to "Charging Stopped." Since then, I've charged successfully at two wall chargers but supercharging still doesn't work, even when trying at the Plano supercharger. (The only difference was that while at the Plano supercharger the instrument display periodically displayed a message saying "Cannot charge. Unplug and try again.") I spent nearly an hour on the phone with roadside assistance while at the Southlake supercharger and the technical people who dug into the issue were unable to identify a cause. We've scheduled a service appointment for Wednesday but I wanted to see if anyone had any ideas in the meantime.