Using WP 3.4.2 and NextGEN 1.9.6 with no NextGEN addons.
After enabling the AJAX pagination, the gallery on this page cannot enable the slideshow after you have paged to the 2nd or 3rd page of images:
http://www.orbitalsystems.com/about/facilities/
To reproduce, click the 2nd page of thumbnails and then click “show as slideshow” above the thumbnails which takes you to this page:
http://www.orbitalsystems.com/index.php?callback=ngg-ajax&p=45&galleryid=14&nggpage=2&type=gallery&show=slide
I think it is a bug.
Any suggestions for what I could check to eliminate that as a possibility?
http://wordpress.org/extend/plugins/nextgen-gallery/