express-cdn not working in production mode

app_crashed_production_mode

var sslEnabled = false;

// Set the CDN options
var options = {
    publicDir : path.join(__dirname, '/../public'),
    viewsDir  : path.join(__dirname, '/../views'),
    domain    : <cdn.mysite.com>,
    bucket    : <bucket-mysitename>,
    key       : <aws user access key id>,
    secret    : <aws user key secret>,
    endpoint  : <bucket-name>.s3.amazonaws.com', // optional
    hostname  : <mysite.com>,
    port      : (sslEnabled) ? 443 : app.get('port'),
    ssl       : sslEnabled,
    production: true,
    logger    : winston.info
};

// Initialize the CDN magic
var CDN = require('express-cdn')(app, options);

// Add the view helper
app.locals.CDN = CDN();

require('../server');
    http.createServer(app)
        .listen(app.get('port'), function () {
            console.log('Express production server listening on port '.blue + app.get('port'));
        });