@yacastr - This would be going from an initial Slideshow to the "picture list" and then using the pagination links to advance?
We are looking into how to best resolve this issue, but in the meantime, there is a work-around. First, go under Gallery > Gallery Settings > NextGEN Basic Thumbnails ... change the images per page to 0 (zero). This will show all thumbnails from the gallery when you click on the Slideshow's picture list link.
If you need pagination in other Thumbnail Galleries you will need to set the appropriate number of images in the Customization panel when you insert the display via the ATP (green button).
Although not an ideal solution, it should work while we find a much better one.
Thanks!
- Cais.