Hey guys. I am not sure why but I am unable to check "enable photo stream" in iPhoto 11. Every time when i check on "enable photo stream", it would uncheck itselfs immediately! I spoke to an Apple Genius about it. While speaking to her on the phone, I found that the problem is actually unique to my photo Library! i.e. if i create a new photo library (alt+click iPhoto), photo stream will be working absolutely fine. However, I have got lots of faces, events, albums in my old library that I am very reluctant to give up. I am sure some would understand. Does anyone know a solution to this? Or if you have any way that could hasten the progress of restoring my iPhoto albums lists, events and etc. Thanks so much!