I found your article interesting and a great solution. I am testing it out and receive this error and cannot seem to implement a work-around.
An error has occurred during report processing.
Cannot create a connection to data source 'master'.
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Do you have any idea what is causing this error? I already checked the remote connectios and we do allow them against the test servers.