OK, I think I might have hit something useful. Please allow me to share it. I hope somebody will try this and see how wrong I might have been.
Before Mavericks, my wife would go out, take pictures with her iPhone, call me, I will, at home, go to iPhoto, go to Photo Stream, download her photos, photoshop them, put them back in iPhoto, and she will see them in her photo stream. Other times, she will come home, tell me about the photos she took that day, and I will do the about so she can then share them via iMessage or What's App on her phone.
Not any more with Mavericks. The pictures she took flatly refuse to show up in photo stream.
Desperate. I did the following:
in her iPhone, I select all the pictures she took, and upload them to photostream (share in her icloud album).
in my MBP, I quit iPhoto, relaunch iPhoto, and now her photos show up in her icloud shared album.
It works, but it *****, for this old man of old habits.
I think the guys who originally wrote OS X are either all retired or whatever and the kids who are now responsible for OS X have no idea where the right hand, the left hand, the left foot and the right foot are.
This now generation does not seem to have a sense of time line, team work, or unity.
IMovie, iPhoto, iTunes are all in different countries if not planets and they can't talk to each other. None of them kids take pictures, let alone use Mac OS X iPhoto iTunes and iMovie at serious armature level. They just take casual pictures of their girlfriends and delete them the next morning. That's life. Apple is a toy, not a tool. They will never be serious corporate computers. Their stock should never be more than $50, let alone $500.
Sigh.