Hi,

See above the config file, it seems that there are no any issue in your app.config, but this error may be caused if the service did not start correctly. I want to know how did you host your WCF service? you can try to host your WCF service in an console application, and also make sure that the objects being used to put DataContract and DataMembers for its repective properties.

Hope this hopes

Regards,
Peter