I am trying to get my svc file working under IIS. In my project, when I press F5 I got the svc working. So I know everything is okay, right? Except for IIS.
I am working
You reference the data contract as the implementation of the service. That's invalid.
[DataContract]
public class Client : ICarePlanActions
{
Change this to reference the implementation of your service! What does the implementation of your service look like?
Maybe you should just remove the DataContract attribute from the Client class. Also this is not your "Client", it is the implementation of the service.