After upgrading from Coexistence Manager for Notes (CMN) QCalCon 3.7 to 3.8 the connector fails with the following error.
2017-10-20 10:13:39,353 [14] INFO ScheduleRequestManager - Call ExchangeFreeBusyService net.tcp to get Free/Busy information
2017-10-20 10:13:39,353 [14] ERROR ScheduleRequestManager - Exception during GetFreeBusyForAllUsers call
System.InvalidOperationException: Could not find endpoint element with name 'FreeBusyServiceEndpoint' and contract 'CMX.API.Core.FreeBusyConnector.WcfServiceHost.IFreeBusyContract' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this name could be found in the client element.