Master of the integration - Compatibility Issue ?

I've been trying to follow the following blog post.  I've downloaded the package and installed into my environment.

http://blogs.vmware.com/orchestrator/2011/09/this-month-started-with-showing-a-great-example-of-vco-providing-process-automation-using-active-directory-email-and-webvie.html

My environment is as follows:

VCO Appliance 4.2

HTTP-REST 1.0

VCD 1.5

VCD 1.5 plugin for VCO

Below is my adjusted config, which matches the config I found in the blog post by Christophe : 

After configuring this by running the "Add a rest host" and "Set vCloud authentication to a rest host" workflows.  SSL certs have been imported via orchestrator configuration.  If I try to run any operation then I get a 403 error - see below.  I've created a vco inventory configuration to point to an old vcd1.0 installation and I'm able to successfully execute REST operations against it without issue, so everything points to the VCD1.5 installation.  I'm able to successfully write curl commands against the 1.5 environment from the command line.  I've created the configuration ten times over so I know this isn't a simple pwd typo.  Do not understand why I continue to get 403s ?

Is there a compatability issue ?

thanks,