Mesosphere DC/OS and Kong

Install and use Kong with Mesosphere DC/OS.

Mesosphere DC/OS and Kong installation documentation

I know this is an older tutorial for installing Kong on DC/OS - Mesos, but I have the need to test it out in this manner for the several months until my team migrates to Kubernetes. I have tried this tutorial, I can get postgres running, but Kong gives json errors: see below:

Installing Marathon app for package [kong] version [1.1.2]
Invalid JSON
error.pattern
error.pattern
error.pattern
error.pattern

When I try installing from the Mesos UI, it give the same error:

/container/docker/portMappings(0)/name.error.pattern/container/docker/portMappings(1)/name.error.pattern/container/docker/portMappings(2)/name.error.pattern/container/docker/portMappings(3)/name.error.pattern

Is there some other method I could use to get this running so I can test?

Thanks, Chris