[NextGallery] No preview of the gallery in the post

Hello to all,
I ask for your support.

I work in my website locally. (http://129.0.30.80/fotoclublegru_locale_1).

Now I have moved the site online (http://www.fotoclublegru.it/aaa/)

I had to make some change in the database because nextgallery has created absolute paths that pointed to the website locally.

Now almost everything works, I have only one problem: when I insert an album into a post or page I create the shortcode:
<img class=”ngg_displayed_gallery mceItem” alt=”” src=”http://www.fotoclublegru.it/aaa/nextgen-attach_to_post/preview/id–3622&#8243; />
But I no longer see the preview of the gallery created.

How to solve?

Thank you.

http://wordpress.org/plugins/nextgen-gallery/