Slew to park (and disconnect) no longer freezes AP, but it still does not work. When I clicked on it in the Telescope Palette, I got a message saying it could not slew to park position (alt = 0deg, az = 180deg) because it was below the horizon. I then used to handbox to park the scope in that very position.

I am polar mounted. Could that confuse AP2? It does not confuse AP1.6.1.

What is probably happening is that there's a small difference between the lat/long/gmtoffset/date/time for the mount and AP settings. AP computes the RA/Dec for the Alt/Az, but the mount thinks it's below the horizon (probably by a very small amount) and refuses to slew.

Fixed. For Meade Autostar and Celestron NexStar mounts I have implemented the "slew to Alt/Az" commands, and these will be used in preference to the "convert to RA/Dec and slew" method. I also "force" the altitude target to be, say, 0.5 degrees as a minimum if the alternative method is used, which should work better.