404 error when going to the category URL?
When you edit a category, there is a URL field. When you go to this URL, the page cannot be found. What is the purpose of this? Shouldn't it show the content items under that category, or do you have to manually create that page?
The URL field in the Categories tab is used mainly for filtering items. For example if you have a number of news items set to a current category and you add a classification by categories, your items will be filtered and the url of the page will be changed to the one you have set in the URL field. Later you can use it if you want to show only certain type of items. In order to achieve this you will have to drop the news widget and the classification widget on one page. Please refer to the attached video which I created for you.
the Telerik team