I have an additional problem that has just cropped up. As of just these past few weeks, when I try tp upload videos from iPhoto on my MAC, the image is a black screen with a white circe arrow and an X. My process is to export the videos from iPhoto, together with photos, to a file on my MAC. I then go to Google+ photos, click on albums tab, then click on upload photos, click on find file on my computer, select the photos and videos files and click OK or open - forget the button name. The photos load, but instead of the videos, I have the black squares withe the white circle and X.
Can you advise what the problem may be?