I got a reply from them:
This collection has restricted access, because of the agrement signed with the custodian, and cannot be viewed on line except if you are a LDS member, that's the reason why you have the message of "Image not available"
Nevertheless, you can view the collection in one of our Family History Center, either in ordering the films or probably on the computer of the center.
Anyway, we invite you to go to the closest center and ask the director for help.
So the reason I can't view the images is because I am not an LDS member.
But I don't really understand why I can view the Rochester images which are in the same collection then?