Slide Duration change will not save

Hi all. I am using the latest (not beta) version of Bridge on a mac. I am trying to create a slideshow with a 10 sec. duration. I make that selection on the Slideshow Options panel, but when I run the slideshow, it's reverting to doing default 5 sec. durations. Any advice? In the screenshot shown: I have tried clicking Play, and I have tried clicking Done and then playing the slideshow using cmd-L, and neither way works properly.