I'm using Google Webmaster Tools to get my forum out there, and when I go to submit the sitemap I get the following error:
Your Sitemap appears to be an HTML page. Please use a supported sitemap format instead.
I've gotten this on numerious directories and files. I thought
/public_html/forums/store_sitemap would do it, but I got two of the exact same error message. I've even tried downloading and uploading a sitemap.xml document, but it gave me the same thing. It's the same error message for everything. I'd like to keep this as automated as possible since vBulletin can generate a new sitemap upon my choosing.