Aperture won't put photos in Photostream
I am suddently unable to use Aperture to upload pictures to a Photostream.
I have a photostream that I am trying to add to that has just under 300 pictures. I select the pictures I want, click the "Share" Icon, and then nothing happens. I select the pictures I want, and then drag and drop them on Photostream in the far left column, and nothing happens. I've been trying for days and cannot get pictures to go in.
I thought it was because I had so many pictures in it, but it won't even let me add them to a new stream. Any help?
I'm running Aperture 3.4.5 on OS X 10.8.4 on a 15" 2.6 GHz i7 with 8GB of RAM.