Route tracing doesn't display anything

I ran the demo in fon/samples/camel-activemq-web using mvn:run and connected the JMX browser as instructed.
All of the artifacts showed up in the different views. I turned on tracing for Route 1 and dragged a message onto route1.in and nothing showed up in the message view. I tried selecting all of the possible output endpoints and they also showed nothing in the message view.