AxupdatePortal utility crashes Ax 2009 RU7

After upgrading Ax 2009 to RU7.

 i tried to redeploy the website in EP using Axupdateportal.exe . The utility crashed and following was the message

Did any one face similar issue. ?

"Unhandled Exception: System.MissingMethodException: Method not found: 'Microsoft

.Dynamics.Framework.Deployment.Portal.EPReturnCodes Microsoft.Dynamics.Framework

.Deployment.Portal.IEPDeployment.ReDeployEnterprisePortal(Boolean, Boolean)'.

   at AxUpdatePortal.Program.Main(String[] args)"

Thnx

KrPr