Currently Being ModeratedOct 29, 2012 5:21 AM (in response to Whatzup)
In some cases it helped to disable PhotoStream in your account, then to create a new user account on ypur mac and enable Photostream for this account. Import some photos to Aperture, then turn off the PhotoStream again for this account. Now enable the PhotoStream again in your account. Does it work now?
Currently Being ModeratedOct 29, 2012 6:37 AM (in response to Whatzup)
I tried. Photo Stream worked perfectly fine on the new account.
So it does not seem to be a network problem, or are you using any helpers, e.g. Little Snitch, that may interfere with your network? Check carefully your login/startup items and the custom preference panes, if there is anything present in your regular account, that is not used in a new user account.
Aloso you may want to check the permissions in your user library; the PhotoStream is stored in the folder ~/Library/Application Support/iLifeAssetManagement/assets/
your user library > Application Support > iLifeAssetManagement > assets
These folders should be writable to you and readable to everyone. Inside the subfolder assets > sub you should find all PhotoStream image files, if they have been downloaded. What are the permissions on these folders?
Just in case, you have not had to access your user library before: In Mt. Lion it is hidden. You can reveal it from the Finder's "Go" menu. Select "Go" in them Finder's main menu bar and hold down the "alt/Options" key, until "Library" appears in the drop-down menu.
Currently Being ModeratedOct 29, 2012 8:03 AM (in response to Whatzup)
Léonie, thanks for the tip again!
I disabled Photo Stream on my MBP, deleted the folder ~/Library/Application Support/iLifeAssetManagement, rebooted, and re-enabled Photo Stream. It's back to business again!
Currently Being ModeratedFeb 13, 2013 12:36 AM (in response to Whatzup)
Thank you very much to Whatzup and Léonie! I had the same problem. I noticed repeating messages in Console referring com.apple.photostream-agent. I tried to delete it and nothing changed. But after removing ~/Library/Application Support/iLifeAssetManagement the Aperture launches almost instantly!