Slimbox no gallery shows

Hi there,

When I try to use the Slimbox lightbox, everything seems to work except that it wont show it as a gallery, I mean it only pops as individual image (no next image link) so I have to click on one image, close it, click the next, etc etc ... is this the normal behaviour for slimbox (I guess not)?

I'm on a multisite installation.

Thanks