InvalidOperationException "role discovery data is unavailable"

Has anyone ever encountered this InvalidOperationException? I am hitting it when I try to access RoleEnvironment.Roles to enumerate deployed DevFabric packages locally, on my dev box. I have DFUI.exe open and can see two roles deployed by hand using CSRun

Source: Microsoft.WindowsAzure.ServiceRuntime

Stack:
   at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.get_Roles()
   at Tests.Functional.TestMarketClient.GetWorkflowHostPort(TestWorkflowHost host) in line 97
   at Tests.Functional.TestMarketClient.get_WorkflowHostPort() in line 84
   {...}

Thanks,
Bryan