Nextgen Gallery can't see picture

I’ve a website with Nexgen after update to latest version i ‘ve this problem:

this page not work https://www.scicaiedolo.it/index.php/nggallery/severino-mariotti-presidente?page_id=545″ my short code is: [album id=26 template=extend] i try to change in [ngg_images album_ids=”2″ display_type=”photocrati-nextgen_basic_extended_album”] but don’t work

in this page first and second gallery work, because the link call folder the other link are whitout folder https://www.scicaiedolo.it/index.php/nggallery/corso-sci-di-fondo-2012?page_id=68

how can i put folder in link?
how can i fix it?

last version of Nexgen
wordpress 4.1

thank’s