AutoBlog giving errors

I’m having issues with setting up the auto blog plugin

I’ve installed the plugin added a feed

http://mashable.france24.com/new/rss/all

I had this error

A feed could not be found at http://mashable.france24.com/new/rss/all. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it… Use force_feed() if you are certain this URL is a real feed.

I’ve tried many other feed URL nothing, same issue

Please help.