Make sure you are logged in in the iCloud system preferences and that PS is enabled in the iPhoto preferences - for complete instructions and software requirements for different features - http://www.apple.com/icloud/setup/
Thanks for the reply...
I am logged in to iCloud and use it for Contacts, Calendar, etc., on my Mac, iPhone, and iPad. I also use it for Photo Stream on the two mobile devices. I just upgraded to iPhoto 11 and turned it on in iPhoto and I am logged in, however, it keeps telling me that I must be signed in to my iCloud account (I am), and when I click continue, it brings me from iPhoto to System Prefs iCloud. I have everything checked there, but it says, "Photos for the iCloud account "_________" cannot be accessed. Review your account informaiton in System Preferences. Then I click "Review" and everything is as it should be.
I don't know what else to do. I have gone throught the turtorials, articles, etc.
In your System Preferences, next to Photo Stream checkbox, there is an "Options" button. Just want to make sure that you have clicked on that, and checked the photo stream options there....
Currently Being ModeratedNov 24, 2012 6:22 AM (in response to gail from maine)
GB & LN,
Yep, clicked and checked the options a "zillion" times.
I finally logged everything out of iCloud on my Mac and logged back in. Violla, now it works. (And, I probably have duplicates in my calendar again, but haven't checked.)
Thank you both for your help!