Somebody else's photos in my cloud
Hi Everybody.
Upgrades all went fine and all my photos are located in the cloud...along with 90 that belong to somebody else!!
They are professional quality and from all different cameras and photographers. I suspect these are Apple "beta ghosts" .
Deleting them one by one crashes Photos.
Am I destroying a valuable archive by deleting?
Apple Photos App-OTHER, OS X Yosemite (10.10.3)