I have about 12000 phots in my Photos (7.0) "unable to upload" folder.
I can view these photos on my MacBook in seemingly sharp, full resolution. BUT I cannot:
edit
"Photos cannot load adjustments for this image"
duplicate
"Failed to download assets for duplication"
nor export
"unknown error (50)"
The only method I can use currently is to take a screen shot of a full screen version... one by one!! Is there any way I can 'recover' these images so that Photo will recognise them.