AX 2009 Workflow validation error.

Hi All,

Server configuration:

"Windows server 2008 R2 SP1 Standard (64bit).

SQL Server 2008 R2

Sharepoint 2010 & IIS 7.5"

AX Configuration:

AX 2009 SP1 + GLS(India) + RU3.

I have installed workflow in this server. installed with warning.

Browsed application from IIS worked fine.

BUT

While accessing workflow below link in IIS.

http://localhost:88/MicrosoftDynamicsAXWorkflow50/AxWorkflowInstance.asmx

it shows three Operations "Active" "Cancel" and "Ping".

when i try to process ping operation i am getting below error in IE.

And when i try to Validate workflow from AX 2009 client i am getting error shown below.

And below are the Event logs

Event log shows exception rises while accessing Security Token from Security Model via SPSecurityTokenServiceManager.get_Local().

Dose it mean that i have to configure SOMETHING in SP 2010 for Security Token?

Please share your Ideas for AX 2009 Workflow with IIS 7 and SP 2010