If it is failing that early in the process, then my guess is it isn't doing the http POST requests correctly. POST is used for a great number of things, from requesting the server status to requesting the clip list or the camera list. My guess is that allcams is actually failing to load completely as well, and you might notice if you attempt to click a camera and it doesn't full-screen. What is this running on? Is the connection being proxied through something?