Role center error on VPC AX2012 - after installing Web services on IIS

On the AX2012 demo image - I get the following error in eventlog when trying to access a role center page after installing the Web Services on IIS package. The host file has been setup correctly and everything was working before the installation of Web services on IIS.

Could not load type ‘Microsoft.Dynamics.Framework.BusinessConnector.Proxy.SysDictClass’ from assembly ‘Microsoft.Dynamics.Framework.BusinessConnector.Proxy, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’.

Microsoft.Dynamics.Framework.Portal

at Microsoft.Dynamics.Framework.Portal.UI.WebControls.Workflow.AxWorkflowActionBar.GenerateActionBar()

at Microsoft.Dynamics.Framework.Portal.UI.WebControls.Workflow.AxWorkflowActionBar.OnPreRender(EventArgs e)

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Control.PreRenderRecursiveInternal()

at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Any suggestions ?

Thanks.

Any solution on this?