Hi Michael,
this solution in CAL has 2 instance types. One of it is r3.8xlarge. Please check the instance limits of your AWS account if it allows you to start this instance type. I assume that your AWS account has a limit and it not entitled to start an instance of the r3.8xlarge type.
https://console.aws.amazon.com/ec2/v2/home?region=us-east-1#Limits:
Regards,
Hannes