Yesterday I wanted to add some subs to a previous sessions.
So as usual, I went to the previous light frame in the asiair memory and hit go to.
But I got a message telling me that it needed to be platesolve before and platesolve did not worked.
I don't understand, I've been using go to from a previous image many times without any issue...
Anybody has any idea why it needed to plate solve again and why it failed?
Clear skies