Bookmarks

I've bookmarked a couple of talks from this April's General Conference. When I pull up my list of bookmarks, they are greyed out with the arrow, indicating that they need to be downloaded. When I click to download them, I get the error message "Unable to download Book April 2016. Could not download the given file." The book and all of the talks are intact.

Any thoughts?

And now, everything is as it should be. The bookmarks are as they should be and the talks are there in full.