Server Version#: 1.18.0.1913
Player Version#: 1.3.1.916-1cb2c34d
Server is hosted on Nvidia SHIELD
On that device, from a web browser, iPhone app, all libraries can be viewed fine.
On the iMac app, only for my Movie Library: “There was an unexpected error.”
All other libraries display fine.
Left it for over a week checking periodically. Restarted the Nvidia. Deleted the app from my iMac and downloaded a fresh copy. Always the same result.