Sorry you're running into trouble here.
What that error message you're seeing means is that the cluster is not starting correctly, so the CloudFormation deploy process cannot succeed. To diagnose what's gone wrong, you need to look in the CloudFormation stack logs, and see events to find out what failed. If you could post some updates here on what's not working, maybe we can help further. There are a lot of reasons things could fail; for example, you could fail to create the VM because of a quota issue, or because something is misconfigured. The best way to figure this out is to just get a dump of the CloudFormation log events and see what's there, and where to go next.
Also, do please specify exactly how you're launching it, whether from the marketplace, or from templates that you downloaded