For some reason, I'm entirely unable to dock any more. Clampotrons won't clamp, no matter what I do; I've docked dozens of times before. I'm completely at wit's end; the problem is persisting even when I restart the game. I'm pretty sure this is a bug, and I need a workaround. Both docking ports are the same size. Both craft are powered. Both docking ports are facing outwards. Both docking ports are aligned with the window near the top. Other docking port is targeted, using Control From Here for local port. Craft is aligned, within 1 m, and with < 50 mm/s velocity in X and Y axes. I activated staging on the craft (I remember reading something about it being necessary to activate staging to engage Clampotrons.) RCS and SAS are off (though I have docked with them on before.) The problem started when I attempted to dock two regular-sized radially-mounted Clamptrons. I figured it was just a matter of Clampotrons not working when attached radially. But now I can't dock my fuel ship with my space station - even though it was docked there before. Here are a couple of pictures: