I am testing this theme for a client on a localhost.
It would seem that the image links do not work.
From your documentation:
1. The “Caption” is used to store the slide title.
2. The “Alternate Text” is used to store the slide URL – where the slide is linking
3. The “Description” is used to generate slide subtitle
Can you document further just what code/info/page id/permalink should be used to have the slide link to a post or a page?