En el enlace, el elemento DiscoveryClientBindingElement no aparece en primer lugar en BindingElementCollection. Cambie el orden de los elementos de forma que el elemento DiscoveryClientBindingElement sea el primero.
Click to search this error in Google
English version
The DiscoveryClientBindingElement does not appear first in the BindingElementCollection of the Binding. Please change the order of elements such that the DiscoveryClientBindingElement is first.
.Net Framework