Hello All,
I thought you might be interested in my experiences. And the most oddest of fixes.
The best summary I located for the actions to follow from the web was via helpdeskgeek (sorry Apple but your support articles are not as concise) the article is here BTW,
http://helpdeskgeek.com/help-desk/photostream-keeps-turning-off-in-iphoto-fix-it
However this isn't the problem, after hours of investigation, rebots, restes, etc.
Oddly I could always see photostream photo's on the Apple TV so this naturally this pointed to iPhoto running under Lion (on a system with all patches applied),
So were was the fault?
Photos running under iOS! (On a patched iPhone running iOS5)
A simple double press of the home button, then hold down the iPhotos app, wait for it to wiggle and press the red minus button. Then relaunch it.
I am still not clear why photostream photos did not show up under iPhoto but they did appear under the Apple TV, however once completed all functionality is restored and I could use this for the first time. 🙂
For those of you trying to get it the photostream function to work the first time (like me) I might add that the following steps are required,
1, Take the picture with the camera,
2, Get your iDevice on to a Wi-Fi network
3, Open the Photos app on the iPhone and soon you see the sync occur to iCloud (top bar).
4, With iPhoto running on the Mac there is an agent (Utilities > Activity Monitor) called PhotoStreamAgent that waits in the background and kicks off a 'get' from the users iCloud account.
...and voila, all is now working!
A bit rubbish these not so clearly documented steps are missing IMHO.
http://www.apple.com/icloud/features/photo-stream.html
(Clearly like the TV ads state in subscript, the marketing sequences were shortened).
However there obviously is a nasty bug in there somewhere and lets hope its in the iOS6 bug fix list, else please remember to reset Photos on the iDevice before syncing.
Cheers. 😎