I tried this but I think my issue is the library is too large. It can pull a few dozen or a hundred or so photos just fine, but then it will time out but not quit out, so I have to babysit the process. Maybe there's a flag I missed in the documentation to retry downloads, but it basically was a nonstarter to me in the state it was in. I think its apples fault though; I can't get a big zip file of icloud data to succesfully download with their website either, it will also time out. Likewise when I try and update the bootcamp drivers on my intel bootcamp machine, I will get 30% of the way there and then it times out. I'd blame my home connection, but from cursory glances at various forums this is apparently a widespread issue with these sort of downloads form Apple.