Good suggestion, ee...
I'm not running Little Snitch so I'm wondering if there are any other tools that people can think of that might be blocking 'PhotoStreamAgent'
I dont recall ever telling any app to block PhotoStream, other than initially not wanting to use Aperture with it since I was using iPhoto at the time.
I have the same problem. Apple should make an update as fast as possible! -.-
It doesn't work in Aperture AND iPhoto, so it's a problem with the photostream and iCloud itself.
Ps. The solution posted above my post is also not working. Even if you open Aperture 3 hours after rebooting, photostream is turned off..
I wanted to resurrect this thread to see if anybody else has a similar issue to mine: my personal Aperture library is on an external drive. I plug it into my work computer occasionally and plug it into my home computer as well. At work, it seems like I have to enable photo stream all the time.
Is it because it's getting confused between my home machine and my work machine? At work, I have a different library which is for all my work photos, and which I don't want photo stream enabled.