I am working in Forms Process Diagram screen and would like to call up a workflow after the user submits a form.  I have a Workflow Service Task configured with a valid Workflow name.  When I click on the checkbox to validate everything I get the following error:  The workflow for the service task named xxx returned back error: "The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.".

I've double checked my workflow configuration and do not have any errors.  I'm using a wildcard SSL cert in IIS valid from GoDaddy.  My forms server and workflow server are installed together on the same machine.

I've searched this site and Google and have come up empty on ideas.