This has worked fine for me in Lion, Mountain Lion & Mavericks but in Yosemite it just refuses to work. Tried unsyncing contacts, restarting, ticking again etc but no luck - everything else syncs absolutely fine it's just the display pictures. A handful are showing up but I'd say this is 5%. Everything shows up normally on my iPhone & iPad running iOS8 and all is as you'd expect on iCloud.com so I know the images are there, it's just Yosemite not showing them. Has anybody else experienced this or know a fix?