[Plugin: NextGEN Gallery] Problems with “exclude” checkboxes

Hi,

I have a problem with the “exclude” checkboxes: I have a gallery with a lot of images, so under “manage Gallery” I have several pages to flip through. When I check “exclude”- checkboxes on one page of the gallery they become unchecked as soon as i check one on another page of the gallery.
Of course I hit “save changes.”
The boxes even stay checked when I do anything else in wordpress, only as soon as I check a box on another page of the gallery they become unchecked,
Any ideas?

Axel