Кто-нибудь знает, что означает это конкретное исключение и как его исправить?

Обратите внимание, что я не прошу помощи по подавлению этого в диалоге исключений. Я хочу понять причину этого и как устранить причину, если это вообще возможно.

Благодарю.

Постскриптум

Строка, которая вызывает FCE:

using (ServiceHost host = new ServiceHost(typeof(WcfPortal)))

Детали исключения:

System.Configuration.ConfigurationErrorsException occurred
  Message="This element is not currently associated with any context"
  Source="System.Configuration"
  BareMessage="This element is not currently associated with any context"
  Line=0
  StackTrace:
       at System.Configuration.ConfigurationElement.get_EvaluationContext()
  InnerException: 

Стек вызовов:

System.Configuration.dll!System.Configuration.ConfigurationElement.EvaluationContext.get() + 0x64 bytes 
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceModelExtensionElement.System.ServiceModel.Configuration.IConfigurationContextProviderInternal.GetEvaluationContext() + 0x1f bytes  
System.ServiceModel.dll!System.ServiceModel.Configuration.ConfigurationHelpers.GetEvaluationContext(System.ServiceModel.Configuration.IConfigurationContextProviderInternal provider = {System.ServiceModel.Configuration.ServiceDebugElement}) + 0x41 bytes    
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceModelExtensionElement.GetConfigurationElementName() + 0x72 bytes   
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceModelExtensionElement.ConfigurationElementName.get() + 0x3a bytes  
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceModelExtensionCollectionElement<System.ServiceModel.Configuration.BehaviorExtensionElement>.Add(System.ServiceModel.Configuration.BehaviorExtensionElement element = {System.ServiceModel.Configuration.ServiceDebugElement}) + 0x2a6 bytes    
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceBehaviorElement.Add(System.ServiceModel.Configuration.BehaviorExtensionElement element = {System.ServiceModel.Configuration.ServiceDebugElement}) + 0x16b bytes    
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceModelExtensionCollectionElement<System.ServiceModel.Configuration.BehaviorExtensionElement>.DeserializeElementCore(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}) + 0x1eb bytes 
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceModelExtensionCollectionElement<System.ServiceModel.Configuration.BehaviorExtensionElement>.DeserializeElement(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}, bool serializeCollectionKey = false) + 0x2f bytes 
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceBehaviorElement.DeserializeElement(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}, bool serializeCollectionKey = false) + 0x2b bytes 
System.Configuration.dll!System.Configuration.ConfigurationElementCollection.OnDeserializeUnrecognizedElement(string elementName = "behavior", System.Xml.XmlReader reader = {Element, Name="serviceDebug"}) + 0xc0 bytes   
System.Configuration.dll!System.Configuration.ConfigurationElement.DeserializeElement(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}, bool serializeCollectionKey = false) + 0xf48 bytes  
System.ServiceModel.dll!System.ServiceModel.Configuration.ServiceBehaviorElementCollection.DeserializeElement(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}, bool serializeCollectionKey = false) + 0x2a bytes   
System.Configuration.dll!System.Configuration.ConfigurationElement.DeserializeElement(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}, bool serializeCollectionKey = false) + 0xe6c bytes  
System.Configuration.dll!System.Configuration.ConfigurationSection.DeserializeSection(System.Xml.XmlReader reader = {Element, Name="serviceDebug"}) + 0x8a bytes    
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionImpl(System.Configuration.RuntimeConfigurationRecord configRecord = ConfigPath = "MACHINE/EXE", System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentConfig = {System.ServiceModel.Configuration.BehaviorsSection}, System.Configuration.ConfigXmlReader reader = {Element, Name="serviceDebug"}) + 0xf6 bytes    
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionWithRestrictedPermissions(System.Configuration.RuntimeConfigurationRecord configRecord = ConfigPath = "MACHINE/EXE", System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentConfig = {System.ServiceModel.Configuration.BehaviorsSection}, System.Configuration.ConfigXmlReader reader = {Element, Name="serviceDebug"}) + 0x98 bytes   
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSection(bool inputIsTrusted = false, System.Configuration.RuntimeConfigurationRecord configRecord = ConfigPath = "MACHINE/EXE", System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentConfig = {System.ServiceModel.Configuration.BehaviorsSection}, System.Configuration.ConfigXmlReader reader = {Element, Name="serviceDebug"}) + 0x5e bytes   
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.CreateSection(bool inputIsTrusted = false, System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentConfig = {System.ServiceModel.Configuration.BehaviorsSection}, System.Configuration.ConfigXmlReader reader = {Element, Name="serviceDebug"}) + 0x7a bytes  
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.CallCreateSection(bool inputIsTrusted = false, System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentConfig = {System.ServiceModel.Configuration.BehaviorsSection}, System.Configuration.ConfigXmlReader reader = {Element, Name="serviceDebug"}, string filename = "C:\\Dev\\windows\\bin\\Debug\\Server.Host.exe.Config", int line = 89) + 0x74 bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.EvaluateOne(string[] keys = {string[2]}, System.Configuration.SectionInput input = SectionInput "system.serviceModel/behaviors", bool isTrusted = false, System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentResult = {System.ServiceModel.Configuration.BehaviorsSection}) + 0x115 bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.Evaluate(System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/behaviors", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/behaviors", object parentResult = {System.ServiceModel.Configuration.BehaviorsSection}, bool getLkg = false, bool getRuntimeObject = true, out object result = null, out object resultRuntimeObject = null) + 0x626 bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSectionRecursive(string configKey = "system.serviceModel/behaviors", bool getLkg = false, bool checkPermission = true, bool getRuntimeObject = true, bool requestIsHere = true, out object result = null, out object resultRuntimeObject = null) + 0x670 bytes 
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSection(string configKey = "system.serviceModel/behaviors", bool getLkg = false, bool checkPermission = true) + 0x44 bytes 
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSection(string configKey = "system.serviceModel/behaviors") + 0x2a bytes   
System.Configuration.dll!System.Configuration.ContextInformation.GetSection(string sectionName = "system.serviceModel/behaviors") + 0x2a bytes  
System.ServiceModel.dll!System.ServiceModel.Configuration.ConfigurationHelpers.UnsafeGetSectionFromContext(System.Configuration.ContextInformation evalContext = {System.Configuration.ContextInformation}, string sectionPath = "system.serviceModel/behaviors") + 0x3a bytes  
System.ServiceModel.dll!System.ServiceModel.Configuration.ConfigurationHelpers.UnsafeGetAssociatedSection(System.Configuration.ContextInformation evalContext = {System.Configuration.ContextInformation}, string sectionPath = "system.serviceModel/behaviors") + 0x3b bytes   
System.ServiceModel.dll!System.ServiceModel.Configuration.BehaviorsSection.ValidateServiceBehaviorReference(string behaviorConfiguration = "serviceBehavior", System.Configuration.ContextInformation evaluationContext = {System.Configuration.ContextInformation}, System.Configuration.ConfigurationElement configurationElement = {System.ServiceModel.Configuration.ServiceElement}) + 0x66 bytes  
System.ServiceModel.dll!System.ServiceModel.Configuration.ServicesSection.ValidateSection() + 0xe7 bytes    
System.ServiceModel.dll!System.ServiceModel.Configuration.ServicesSection.PostDeserialize() + 0x1e bytes    
System.Configuration.dll!System.Configuration.ConfigurationElement.DeserializeElement(System.Xml.XmlReader reader = {EndElement, Name="services"}, bool serializeCollectionKey = false) + 0x1fef bytes  
System.Configuration.dll!System.Configuration.ConfigurationSection.DeserializeSection(System.Xml.XmlReader reader = {EndElement, Name="services"}) + 0x8a bytes 
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionImpl(System.Configuration.RuntimeConfigurationRecord configRecord = ConfigPath = "MACHINE/EXE", System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentConfig = {System.ServiceModel.Configuration.ServicesSection}, System.Configuration.ConfigXmlReader reader = {EndElement, Name="services"}) + 0xf6 bytes    
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionWithRestrictedPermissions(System.Configuration.RuntimeConfigurationRecord configRecord = ConfigPath = "MACHINE/EXE", System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentConfig = {System.ServiceModel.Configuration.ServicesSection}, System.Configuration.ConfigXmlReader reader = {EndElement, Name="services"}) + 0x98 bytes   
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSection(bool inputIsTrusted = false, System.Configuration.RuntimeConfigurationRecord configRecord = ConfigPath = "MACHINE/EXE", System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentConfig = {System.ServiceModel.Configuration.ServicesSection}, System.Configuration.ConfigXmlReader reader = {EndElement, Name="services"}) + 0x5e bytes   
System.Configuration.dll!System.Configuration.RuntimeConfigurationRecord.CreateSection(bool inputIsTrusted = false, System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentConfig = {System.ServiceModel.Configuration.ServicesSection}, System.Configuration.ConfigXmlReader reader = {EndElement, Name="services"}) + 0x7a bytes  
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.CallCreateSection(bool inputIsTrusted = false, System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentConfig = {System.ServiceModel.Configuration.ServicesSection}, System.Configuration.ConfigXmlReader reader = {EndElement, Name="services"}, string filename = "C:\\Dev\\windows\\bin\\Debug\\Server.Host.exe.Config", int line = 78) + 0x74 bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.EvaluateOne(string[] keys = {string[2]}, System.Configuration.SectionInput input = SectionInput "system.serviceModel/services", bool isTrusted = false, System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentResult = {System.ServiceModel.Configuration.ServicesSection}) + 0x115 bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.Evaluate(System.Configuration.FactoryRecord factoryRecord = FactoryRecord "system.serviceModel/services", System.Configuration.SectionRecord sectionRecord = SectionRecord "system.serviceModel/services", object parentResult = {System.ServiceModel.Configuration.ServicesSection}, bool getLkg = false, bool getRuntimeObject = true, out object result = null, out object resultRuntimeObject = null) + 0x626 bytes   
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSectionRecursive(string configKey = "system.serviceModel/services", bool getLkg = false, bool checkPermission = false, bool getRuntimeObject = true, bool requestIsHere = false, out object result = null, out object resultRuntimeObject = null) + 0x670 bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSectionRecursive(string configKey = "system.serviceModel/services", bool getLkg = false, bool checkPermission = false, bool getRuntimeObject = true, bool requestIsHere = false, out object result = null, out object resultRuntimeObject = null) + 0x63d bytes    
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSectionRecursive(string configKey = "system.serviceModel/services", bool getLkg = false, bool checkPermission = true, bool getRuntimeObject = true, bool requestIsHere = true, out object result = null, out object resultRuntimeObject = null) + 0x63d bytes  
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSection(string configKey = "system.serviceModel/services", bool getLkg = false, bool checkPermission = true) + 0x44 bytes  
System.Configuration.dll!System.Configuration.BaseConfigurationRecord.GetSection(string configKey = "system.serviceModel/services") + 0x2a bytes    
System.Configuration.dll!System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(string sectionName = "system.serviceModel/services") + 0x7e bytes    
System.Configuration.dll!System.Configuration.ConfigurationManager.GetSection(string sectionName = "system.serviceModel/services") + 0x48 bytes 
System.ServiceModel.dll!System.ServiceModel.Configuration.ConfigurationHelpers.UnsafeGetSectionFromConfigurationManager(string sectionPath = "system.serviceModel/services") + 0x31 bytes   
System.ServiceModel.dll!System.ServiceModel.Configuration.ConfigurationHelpers.UnsafeGetAssociatedSection(System.Configuration.ContextInformation evalContext = null, string sectionPath = "system.serviceModel/services") + 0xac bytes 
System.ServiceModel.dll!System.ServiceModel.Configuration.ConfigurationHelpers.UnsafeGetSection(string sectionPath = "system.serviceModel/services") + 0x22 bytes   
System.ServiceModel.dll!System.ServiceModel.Configuration.ServicesSection.UnsafeGetSection() + 0x26 bytes   
System.ServiceModel.dll!System.ServiceModel.Description.ConfigLoader.LookupService(string serviceConfigurationName = "Csla.Server.Hosts.WcfPortal") + 0x39 bytes    
System.ServiceModel.dll!System.ServiceModel.ServiceHostBase.LoadConfigurationSectionInternal(System.ServiceModel.Description.ConfigLoader configLoader = {System.ServiceModel.Description.ConfigLoader}, System.ServiceModel.Description.ServiceDescription description = ServiceType={Csla.Server.Hosts.WcfPortal}, string configurationName = "Csla.Server.Hosts.WcfPortal") + 0x2d bytes 
System.ServiceModel.dll!System.ServiceModel.ServiceHostBase.ApplyConfiguration() + 0xfa bytes   
System.ServiceModel.dll!System.ServiceModel.ServiceHostBase.InitializeDescription(System.ServiceModel.UriSchemeKeyedCollection baseAddresses = {System.ServiceModel.UriSchemeKeyedCollection}) + 0xf8 bytes 
System.ServiceModel.dll!System.ServiceModel.ServiceHost.InitializeDescription(System.Type serviceType = {Name = "WcfPortal" FullName = "Csla.Server.Hosts.WcfPortal"}, System.ServiceModel.UriSchemeKeyedCollection baseAddresses = {System.ServiceModel.UriSchemeKeyedCollection}) + 0x83 bytes    
System.ServiceModel.dll!System.ServiceModel.ServiceHost.ServiceHost(System.Type serviceType = {Name = "WcfPortal" FullName = "Csla.Server.Hosts.WcfPortal"}, System.Uri[] baseAddresses = {System.Uri[0]}) + 0x16a bytes    
Server.Host.exe!Server.Host.Program.Main(string[] args = {string[0]}) Line 37 + 0x38 bytes  C#

EDIT

Проблема не возникает сама по себе после обновления до .NET 4 и VS2010. Я думаю, что MS это исправил.