I've installed this in my forum at
http://www.gibson-talk.com/forum.
I've told Google to find the sitemap index file there (
http://www.gibson-talk.com/forum/sitemap_index.xml.gz) and it does, but when I look at that index file it tells Google to go to: <loc>http://www.gibson-talk.com/sitemap_1.xml.gz</loc>
Problem is when I manually connect to that address it gives a file not found error -- it's missing the vbroot "forum" in the URL.
What should I do to fix this?