I'm trying to submit my sitemap in Google Webmaster Tools, and I'm getting 2 errors. Here is my sitemap link: http://www.partycentersoftware.com/sitemap_index.xml
The first error says "This is not a valid url" in regards to this link: http://www.partycentersoftware.com/post-sitemap.xml
The second error says "Your Sitemapp appears to be an HTML page. Please use a supported sitemap format instead" in regards to this link: http://www.partycentersoftware.com/page-sitemap.xml
On the Yoast knowledge base, I found a post about this error coming up when using W3 Total Cache: http://kb.yoast.com/article/123-xml-sitemap-errors
I'm not using that caching plugin, but I am using WP Super Cache instead. Even when I deactivate this caching plugin and submit the sitemap, it still throws the error.
Any suggestions?
