WCF error while publishing a page.

Hi,

We are facing this error while publishing the page in Sitefinity.

An error occurred while receiving the HTTP response to http://<domain>/defaultworkflows/pagesapprovalworkflow.xamlx 
. This could be due to the service endpoint binding not using the HTTP protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the service shutting down). See server logs for more details.

I have found one link related to this 
 http://www.sitefinity.com/devnet/forums/sitefinity-4-x/general-discussions/failed-workflow-operation.aspx#1746093 
 but i am not able to access this link.

Can anyone help with this?

Thanks,
Gagan