When submitting my sitemap URL to Bing, I get the following error:
HTTP code: 200
Severity: Error Line: 5 Position: 25 Message: The 'http://www.sitemaps.org/schemas/sitemap/0.9:changefreq' element is invalid - The value 'Weekly' is invalid according to its datatype 'http://www.sitemaps.org/schemas/sitemap/0.9:tChangeFreq' - The Enumeration constraint failed.
Severity: Error Line: 10 Position: 25 Message: The 'http://www.sitemaps.org/schemas/sitemap/0.9:changefreq' element is invalid - The value 'Weekly' is invalid according to its datatype 'http://www.sitemaps.org/schemas/sitemap/0.9:tChangeFreq' - The Enumeration constraint failed.
http://www.bing.com/webmaster/
Maybe the value 'Weekly' should be 'weekly', with a lower case 'w'?