crypto.js error - variation b/t CentOS EC2 instances

Hi,

I created a CloudWatch library yesterday based on node-ec2 library and simple-rest-client, https://github.com/franklovecchio/node-cloudwatch, but I see an interesting error with a particular newer version of CentOS on EC2 with the same dependencies installed. I created a ticket for myself here:

https://github.com/franklovecchio/node-cloudwatch/issues/1

I'm not sure what dependency is different - maybe you have experienced this with node-ec2?

Thanks!