[Puppet Users] can't get yaml from 2.6 loaded into 3rd party script

[asq]

what am i doing wrong?

<0>r...@test2(46)~$ cat <<.|/usr/bin/ruby ; echo $?
> require 'puppet'
> require 'yaml'
> YAML.load_file('/var/lib/puppet/client_yaml/catalog/$HOSTNAME.yaml')
> .
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`transfer': can't convert Array into String (TypeError)
        from /usr/lib/ruby/1.8/yaml.rb:133:in `each'
        from /usr/lib/ruby/1.8/yaml.rb:133:in `transfer'
        from /usr/lib/ruby/1.8/yaml.rb:133:in `node_import'
        from /usr/lib/ruby/1.8/yaml.rb:133:in `load'
        from /usr/lib/ruby/1.8/yaml.rb:133:in `load'
        from /usr/lib/ruby/1.8/yaml.rb:144:in `load_file'
        from /usr/lib/ruby/1.8/yaml.rb:143:in `open'
        from /usr/lib/ruby/1.8/yaml.rb:143:in `load_file'
        from -:3
1
<0>r...@test2(47)~$ rpm -q puppet
puppet-2.6.4-1

<1>r...@test1(2)~$ cat <<.|/usr/bin/ruby ; echo $?
> require 'puppet'
> require 'yaml'
> YAML.load_file('/var/lib/puppet/client_yaml/catalog/$HOSTNAME.yaml')
> .
0
<0>r...@test1(3)~$ rpm -q puppet
puppet-0.25.5-1.el5

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