I've just recently moved my site to a new server, and a problem has arisen with my image gallery. Whilst I, as a site admin, can see all the images in it without any problems, none of my site's registered visitors can see anything in the gallery. For them, it comes up 0 images in 0 categories.
My gallery is integrated with vBulletin 2.2.8, I'm using the correct sessions.php, and my config files are correct. What could the problem be?