This problem has been killing me for ages, and I can't figure it out.
I have been using a customized version of minimalgallery on my site for quite a long time now, and it stopped working either when I updated WP or I made some change to a .htaccess file somewhere(I think I have ruled this out though)
The frustration comes from when a 'category' is clicked.. the URL is correct, but the same directory is displayed.
Have a look: http://www.adailyadventure.com/journal/photos/
Clicking on any of the other links just shos the same pic and same folder.