An error has occurred in Capabilities Testing

Nintex 2013 on  SharePoint 2013

I have a flow that has multiple parallel paths and a "Set a Condition" decision where there is nothing on the "No" path and when testing the flow the following error is thrown when the flow follows the "No" path:

Error in approval header. Cannot insert the value NULL into column 'WorkflowProgressID', table 'NW2013DB.dbo.HumanWorkflow'; column does not allow nulls. INSERT fails.
The statement has been terminated.
The 'CreateHumanWorkflowInstance' procedure attemp

If we add a "Assign to-do task" to the "No" path the flow succeeds when the flow follows the "No" path, but we do not want anything to be done on the "No" path.