Links not working

Hi, I think my server did an upgrade, now my links are broken and I can't figure out how to fix them.

This is the site: http://independencelandcompany.com/gallery/index.php

When you click on a gallery, a "Not Found" error appears.

Any help greatly appreciated.

Jon

The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful):http://independencelandcompany.com/gallery/index.php
Gallery version:1
Apache version:?
PHP version (don't just say PHP 4, please):5
Graphics Toolkit:NetPBM
Operating system:mac
Web browser/version (if applicable): all