Ah interesting.. I got 10.12 about two days ago so I figured I might have just walked in on my car as it was swapping the maps and stopped the process in the middle.I don't believe that's related to the maps update. I get this briefly when restarting 10.4 which isn't getting the maps update.
That sounds right, however i've never seen it in the past when rebooting and the timing with the new maps and the update I just got a few days ago make me suspect it may be a little more than that.My guess is it's a race condition: there's an integrity check on the maps that's finishing before the map data is fully loaded. It throws the warning as, accurately, the map data isn't loaded (yet), but then when the data actually finishes loading, now things are OK so the warning goes away.
no just the dash