Spec unmarshalling fails on "cached" resources

[tvandinther]

For all regions other than us-west-1, spec unmarshalling fails with the message:

json: cannot unmarshal string into Go struct field CloudFormationResourceSpecification.PropertyTypes of type main.Resource

Looking into the source spec of eu-west-1 here you can see that the resources have the value "CACHED". Presumably this is the case if they are unchanged compared to some base structure. Taking a look at us-east-1 it appears that all resources are defined here. us-east-1 is also the only region that succeeds in the spec generation.