Unable to export or edit certain photos in Photos
I want to export some photos from the standard program Photos on my mac, but nothing works. I can't even put them in my iCloud, my documents or edit them in Photos. I did find out all the photos I have problems with are taken with my old iPhone 4, but I don't see why nothing works and I'm getting really frustrated.
MacBook Pro (Retina, 13-inch,Early 2015), OS X El Capitan (10.11.4)