Q: Photos Photostream will not import photos.

I'm really struggling with iPhoto and can't seem to get it to share a photo stream.

I select all of my photos in my library by highlighting them.  I then click 'share' then I click iCloud, I select a new stream and type the email address of people whom I wish to share the images with.  The stream is created but no photos are moved, there are about 600 photos which I wish to share and at one point it did share a random 75 to a photo stream.

Has anyone else had this problem?  I'm regretting moving away from dropbox at the moment.

Many thanks