For information :
I’m using the “Photoswipe for NextGen” plugin for to handle lightboxes on mobile devices.
It does work with NextCellent pretty much out-of-the-box, but the (limited) options aren’t visible – partly because the plugin hooks into the NextGen menu.
This is easily sorted.
Changing line 55 of the plugin’s ngg_photoswipe.php from :
add_submenu_page('nextgen-gallery', "Photoswipe", "Photoswipe", 'manage_options', __FILE__, 'nggphotoswipe_options_page');
to :
add_submenu_page('nggallery', "Photoswipe", "Photoswipe", 'manage_options', __FILE__, 'nggphotoswipe_options_page');
will add the options under NextCellent’s “Gallery” admin tab.