I have a .Net 3.5 SP1 WCF service running under IIS 7 on a Windows 2008 machine. When I try to connect to this service from an IIS hosted WCF service running under IIS 5.0 (Windows XP) .Net 3.5 SP1, I get the following error:I have a .Net 3.5 SP1 WCF service running under