[ncushing]

This error can appear if your connection to the web server passes through a proxy. If that is the case, you can configure your application for the proxy by adding the following to the <configuration /> section of your app.config.

<system.net>
        <defaultProxy>
            <proxy
                 usesystemdefault = "false"
                 proxyaddress="http://[PROXY_URL]:[PORT]"
                 bypassonlocal="true"
        />
        </defaultProxy>
    </system.net>