Geocortex.Workflow.Activities.WebRequest getting 405 error from Remote Server

Hi to all

firstly I realise that in all likelihood that this is not a Geocortex issue but in all likelihood someone will have bumped into it already.

I am attempting to use the WebRequest Activity (built by LG) to fetch a pdf file from another server as a Byte Array. I am only specifying the Uri to request but it errors with the Workflow Error of:

Exception has been thrown by the target of an invocation.

Workflow 'ShowDpSheet' failed

Aborted Exception: 'The remote server returned an error: (405) Method Not Allowed'

The uri being used opens fine if it is used by a RunExternalCommandActivity with the CommandName of ' NavigateToUri '

The reason that I want a byte array is that this pdf (plus another) are to be concatentated together using a third-party tool that takes an input parameter of a List(Of Byte Arrays) for the pdfs to be concatenated.

It would appear that it would be IIS on the Remote Server that is saying 'Go Away'. That server is running Server 2008 R2.

Any thoughts or pointers on what needs to be configured would be most appreciated.

Thanks

Ralph Price