I'm having the same issue. I replaced my battery and the BST plug popped out. I got the error, realized what it was and plugged it back in. The error still won't go away however.
Did you have to do anything special to reset it? Or should it just go away on its own once the cable is plugged back in?
I'm new to programming but have the cable and software set up. I did the battery registration which was successful so if there is something I can check or reset with the coding software I'm all set...