lightbox problem

Hi there,

First off all i love the Brightpage theme but have a problem..
I can’t get any of the lightbox plugin’s work on this theme. I tried all kinds of different plugins apart from eachother and tried to use Nextgen Gallery but nothing seems to work. It is not a problem of my wordpress installation or hosting because with different theme’s there is no problem whatsoever. Can anyone tell me please what’s the problem and how to solve it?

Thanks for your help!
Chris