Spinning rainbow wheel of death when trying to move edited photos
I'm running Photos in MacOS 12.4 on a 16" MacBook Pro (M1 Pro, 2021) and have run into a very frustrating problem. I just imported several hundred photos from my iPhone and organized them in an album. Then I started editing the photos (cropping, enhancing) and moved the best ones into a Shared iCloud album.
Every time I attempt to move an edited photo into the Shared album, the spinning rainbow wheel of death appears and the application becomes unresponsive -- the only way to move forward is by force quitting. It actually occurs as soon as I select any photo that has been edited - photos that have not been altered can be copied and moved without incident.
I've rebuilt/repaired the photo library - didn't make any difference.
Does anyone have any idea why trying to move an edited photo would make the application freeze? Any ideas how to fix it?
Thanks.