I created my first sitemap with this plugin and added it to google webmaster tools. In my account I went to Crawl > Sitemaps and received the following error:
Issue: Missing XML tag
Description: This required tag is missing. Please add it and resubmit.
Example: (Sitemap: businessandculturecast.com/sitemap-externals.xml Parent tag: urlset Tag: url)
Where is the file? I've searched my database and it doesn't exist there.