Hi Khalid,
The latest OnstepX driver does not solve the problem. The pointing error calculation of Kstars seems to compute the pointing error based on the synced coordinate from plate solve and the last GOTO coordinate instead of the reported pointing of the scope, that is why the sync command keeps reporting the same error after sync. If I perform the goto then do a plate solve and sync, the error, say it is 100 arcsecs, then without moving the mount, I sync the mount to a different part of the sky (by right click on the sky chart then sync), then do a plate solve, the error is still 100 arcsec. The mount compare the plate solve to the last GOTO instead of the current pointing of the scope.
This is a driver bug right?

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