[Plugin: NextGEN Gallery Sidebar Widget] {=gallery.link} not working?

Hiya,

I am busy to make a new blog and i found this nice plugin… but de link to the galleries wont work?

I have in the inner.html:
<a href="{=gallery.link}" title="{=gallery.title}"><img src="{=image.url}"{=image.output_width_tag}{=image.output_height_tag} alt="{=gallery.title}" /></a>

and the output is:
<a href="" title="gallery 015"><img src="https://www.domain.nl/wp-content/gallery/gallery-015/thumbs/thumbs_1.jpg" width="70" height="70" alt="gallery 015" /></a>

How can i get this working?