Pagination not displaying properly!

I'm using acidfree to allow artists to upload images of their artwork and show them as exhibits. For some reason, when viewing an acidfree album (or exhibit as we call it) the pagination above the images is not working properly. If i click on "next" or "2" to get to the next image, you do get to the next image but the pagination jumps to page 3, next to page 7 and next to page 13 and so on. An example of what I'm talking about can be seen on http://dev.localartla.com/exhibits, pick any exhibit/album with more than 1 image and you'll see what I'm talking about when you click on "next" to see the next image. TIA for your help.