Unfortunately, we noticed now only by the hint of an user of nessMediaCenter that Apple has changed the database structure of the Photos library.
As with any Apple update, we of course tested the access to the media of the Photos App in the MediaCenter and found no problems.
Normally you update old database structures in case of changes – and in this case we would also have noticed the problem. But the Photos App 3.0 instead supports 2 different database structures: the structure of old (existing) and new databases.
Fortunately, we quickly found the problem: Apple just renamed 2 fields in the Photos library database.