Your application is not able to connect to activemq. Check that your activemq is running and listening on localhost 61616.
You can try using: netstat -a to check if the activemq process has started. Or try check if you can access your actvemq using admin page: localhost:8161/admin/queues.jsp
On mac you will start your activemq using:
$ACTMQ_HOME/bin/activemq start
Or if your config file (activemq.xml ) if located in another location you can use:
$ACTMQ_HOME/bin/activemq start xbean:file:${location_of_your_config_file}
In your case the executable is under: bin/macosx/activemq so you need to use: $ACTMQ_HOME/bin/macosx/activemq start