Feed error

Hi,
I am facing problem with a feed URL. When I use the feed with one of my site I get “Feed Error” but when I use the same feed with different site the feed is working.
Here is the screenshot where feed not working: http://awesomescreenshot.com/0a71qsmqc9

Same feed on different domain where feed is working: http://awesomescreenshot.com/0731qsmtc6

http://ww.wp.xz.cn/plugins/wpematico/