Custom and generated sitemap both fail on Google Webmaster Tools

I tried creating my own sitemap.xml using sitemap.org and google`s guidelines, but got the “X” on google webmaster tools.

I decided to use Google XML Sitemap`s plugin by Arne Brachhold, but am still getting the “X” on google webmaster tools.

I submitted both urls to google as follows:
www.magazine (please combine ->) library.jp
magazine (please combine ->) library.jp

However, I am still getting the “X” on google webmaster tools.

The sitemap is on:
magazine (please combine ->) library.jp/news/sitemap.xml

If someone could please take a look at it, I would highly appreciate it.

Thank you!

@seriocomic

I am on shared hosting and am not sure why it is not resolving properly. Any ideas?

I get a validation error on the www version of that URL, while http://magazinelibrary.jp/news/sitemap.xml validates fine.

Looks like a misconfiguration somewhere. Why doesn’t your site resolve no-www to www version?