[Plugin: Google XML Sitemaps] Broken Admin Page

Hello, when I navigate to the settings page for either of the links in the WP Admin, it just redirects me to the homepage of my WP install? I have my sitemap working though, which does not include the XLS stylesheet anymore but the Link in the source seems correct?

http://ww.wp.xz.cn/extend/plugins/google-sitemap-generator/