WCF: using streaming with Message Contracts

Question

I am trying to use the WCF streaming with Message Contracts, because I need additional parameters beside the stream itself.

Basically I am creating a file upload and

Answer 1

I got the error after using the 'WCF Data Service' template to generate the svc file instead of the 'WCF Service' template. Correcting the service host file the issue was solved.