cshuck wrote:
I've tried doing the Option+Command to repair the library and Option to choose/create a new library. Neither were successful.
When I create a new photo library and set it as the System library, it spins and spins but never completes.
To trouble shoot further you can:
—Test issue in another user (or guest user) account Change Users & Groups settings on Mac - Apple Support
This will tell you if it a universal issue or isolated to your user/admin account.
—A SafeBoot How to use safe mode on your Mac - Apple Support will sort many anomalies
Takes a bit longer to get to the login screen, does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, font cache, etc., third party system modifications and system accelerations are disabled.
Login and test. Reboot as normal and test. Caches get rebuilt automatically.
a reboot will put it back to normal mode.
This test will tell you if third party interference; most* extensions etc are not loaded in safe boot mode.
If no insight or resolve—
You can always try re-installing the macOS on top of your existing macOS to refresh the baked in application
How to reinstall macOS - Apple Support