Plugin: XML Sitemap Feed - WP3.0 Multi Sites - works on subdomains and not main

Plugin: XML Sitemap Feed - WP3.0 Multi Sites - works on subdomains and not main

I have just installed the plugin: XML Sitemap Feed.

I have Domain Mapping installed.

Works very nicely except on my main blog.

Anyone else have any experience with this plugin and behaving in this manner?