Template Node.js Chat app not working anymore?


I created a node app here on c9 a while ago, and back then I used the template node.js workspace chat application to learn socket.io. I just tried to start something new, and I created a new node.js template workspace. I don’t know if I’m doing something wrong here, but I get the “Failed to load resource: the server responded with a status of 404 (Not Found)” error messages when I try to preview the template web chat for everything, (bootstrap.min.css, bootstrap-responsive.min.css, angular.min.js, jquery.min.js, bootstrap.min.js, socket.io.js)
What’s going on here?