Last night I got this error:
I got it twice. Once early in the evening in the middle of an image and I hit yes and the sequence restarted. This morning I got up and the same message was on the screen but the mount was actually still tracking. Since it was daylight I hit “no” to abort the sequence. The sequence then tried to restart by doing a dither and then a focus run. I was finally able to abort it when sequence recovery kicked in. The error happened at 12:26 am.
So, I’m not sure if the mount is throwing out a false report or SGP interpreted something wrong. But choosing the option which would abort the sequence did not work either.