links not working from blog index page

I have created a Blog index page. When in edit mode and I test the links to different blogs, the links work. When I test the live site I get the following message:"We couldn't find the page you were looking for. This is either because:There is an error in the URL entered into your web browser. Please check the URL and try again.The page you are looking for has been moved or deleted.You can return to our homepage by clicking here, or you can try searching for the content you are seeking by clicking here."

I do not know how to resolve this issue. Can anyone help?