No memories even after a scan (18k photos)
After updating to Sierra I tried the "memories" in Photos. It went on to a lenghty scan that took all night, and in the morning I found an empty page with the words "NO MEMORIES - Memories will appear here when more photos and videos are added to your library".
I tried to have it scan again, now it takes less than a minute (the progress bar comes up almost all done, like if I was resuming a process) and then it comes back with the same page.
I have 18K+ photos, they all show up without problems (for all I can see). Why isn't it doing any memory out of them?
Mac Pro, iOS 10