3
It definitly sounds like a template problem. If you are using a custom template set, copy the templates for news_article.html and news_item.html from the default template set into the custom one. If you are still using a default template set try reloading the module in System -> Modules. If neither works, check if the current theme includes any templates in /themes/<yourtheme>/templates/news/ . If so, replace / remove these templates with the default ones.