[Plugin: Media Tags] Media_Tags Pages

I have installed the newest media_tags plugin and it works fabulous!
But I can’t display the search-pages for each media_tag. My Permalinks look like this:

http://www.treesonwhite.com/media_tag/tree/

I get a “404” Error when viewing these sites, whereas with the common post tags:
http://www.treesonwhite.com/tag/animals/

I get a list of Blog-Posts.

It seems I need to set up either the function or a php-template for the media_tags. Does any one know what I need to do exactly to make this work? I think I may have already all the code, I just don’t know where to put it or how to call the function…

Best,
Gromi

http://wordpress.org/extend/plugins/media-tags/