Hi. I am a photographer. And for some reason I'm trying to upload photos from my sessions to Facebook and it won't work. It just keeps showing posting with 3 dots but never posts the photos. I've never had this problem before. I don't know if its a imac problem or a Facebook issue. I have no issues transferring them to my phone and uploading. But I don't like doing that. I normally just log into Facebook hitpload photo, pick my photo and upload. It just won't work.