a feed that don't fetch, why?

[schuster]

here a feed i can only download the first article.
and i don't now why.
at the overview there are many articels but i aren't able to fetch more than the first one.

any idea?

http://www.damals.de/rss/damals_news.xml

class AdvancedUserRecipe(BasicNewsRecipe):

    title          = u'Damals.de'
    __author__  = 'schuster'
    oldest_article = 14
    max_articles_per_feed = 100
    no_stylesheets         = True
    use_embedded_content   = True
    language               = 'de'
    remove_javascript      = True

    def print_version(self, url):
        return url.replace('?aid=', '?tid=2&aid=')



    feeds          = [(u'Damals', u'http://www.damals.de/rss/damals_news.xml')]
	  
#web:
#http://www.damals.de/de/4/news.html?aid=190374&action=showDetails

#print:
#http://www.damals.de/de/4/news.html?tid=2&aid=190374&action=showDetails&cmtUri=/de/4/news.html