Puppet users - Feb 2013 - Error while bootstrapping a new instance with my puppet master on EC2

Hi,

  My puppet master version:-  

#puppet --version
2.7.19 (Puppet Enterprise 2.7.0)

While bootstrapping a new instance with my puppet master on Ec2,I am 
getting this error

#puppet node_aws bootstrap --type t1.micro --image ami-00934969 --keyname 
ec2 --login root --keyfile ~/.ssh/ec2.pem --mode agent
notice: Creating new instance ...
notice: Creating new instance ... Done
notice: Creating tags for instance ...
notice: Creating tags for instance ... Done
notice: Launching server i-70cdae03 ...
#######
notice: Server i-70cdae03 is now launched
notice: Server i-70cdae03 public dns name: 
ec2-23-23-43-12.compute-1.amazonaws.com
notice: Waiting for SSH response ...
notice: Waiting for SSH response ... Done
notice: Installing Puppet ...
notice: Puppet is now installed on: ec2-23-23-43-12.compute-1.amazonaws.com
notice: No classification method selected
notice: Signing certificate ...
err: Signing certificate ... Failed
err: Signing certificate error: Could not render to pson: private method 
`gsub'' called for nil:NilClass


Can anyone help on this? 
Thanks & Regards, 
Vineet

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.