I am running a windows 7 withthe icloud control panel installed and syncing everything but the photos iplaced in the upload folder. Would the fact i placed 4 separate sub folder in the upload folder be messing it up?
If signed in, any photos dragged into the folder set for upload should be sent to the stream. I had a small issue where photos already in my upload folder wouldn't go. Dragging them out and back in worked.