I'm having some issues with a rather complex base/sky crane setup. I have a number of robotic parts on the ship, and during bits of the mission, some were flopping around. I solved this usually by resetting to build angle, and that worked... some of the time. Now that I have the thing stable and ready to land, some parts are not giving me the option of changing the angle (hinge) or extension (piston) at all. The motor shows as engaged, but the slider bar for the angle/extension is not present. And reset to build angle does nothing. The craft has plenty of electricity.
Here's the really weird thing. These parts are in pairs (mirrored), and one of the two parts in the pair usually has a working bar. It only changes that one part; not its mirror.
I'm running KSP 1.8.1.2694 (mac), 1.8.1 Making History, 1.3.1 Breaking Ground, using KJR-next (meirumeiru's) 4.1.15 and Kerbal Alarm Clock 3.12.
Thanks, everyone!
--Ken