WebHost failed to process a request.

See more:

service

Silverlight5

WebHost failed to process a request.
Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/18103959
Exception: System.ServiceModel.ServiceActivationException: The service '/Services/LIS-Web-LISDomainService.svc' cannot be activated due to an exception during compilation. The exception message is: The ItemCollection for the 'OCSpace' space has already been registered.. ---> System.InvalidOperationException: The ItemCollection for the 'OCSpace' space has already been registered.
at System.Data.Metadata.Edm.MetadataWorkspace.RegisterItemCollection(ItemCollection collection)
at System.Data.Metadata.Edm.MetadataWorkspace.RegisterDefaultObjectMappingItemCollection()
at System.Data.Metadata.Edm.MetadataWorkspace.GetItemCollection(DataSpace dataSpace, Boolean required)
at System.Data.Metadata.Edm.MetadataWorkspace.TryGetMap(GlobalItem item, DataSpace dataSpace, Map& map)
at System.Data.Metadata.Edm.MetadataWorkspace.TryGetEdmSpaceType(StructuralType objectSpaceType, StructuralType& edmSpaceType)
at System.ServiceModel.DomainServices.EntityFramework.ObjectContextUtilities.GetEdmType(MetadataWorkspace workspace, Type clrType)
at System.ServiceModel.DomainServices.EntityFramework.LinqToEntitiesDomainServiceDescriptionProvider.LookupIsEntityType(Type type)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.<>c__DisplayClass14.<>c__DisplayClass16.<createdescriptionprovider>b__13(DomainServiceDescriptionProvider p)
at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.<>c__DisplayClass14.<createdescriptionprovider>b__12(Type t)
at System.ServiceModel.DomainServices.Server.DomainServiceDescriptionProvider.IsEntityType(Type type)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.IsQueryMethod(DomainOperationEntry operation)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.TryClassifyImplicitDomainOperation(ReflectionDomainOperationEntry operation)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.ClassifyDomainOperation(ReflectionDomainOperationEntry operation)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.GetDescription()
at System.ServiceModel.DomainServices.Server.DomainServiceDescriptionProvider.GetDescription()
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.CreateDescription(Type domainServiceType)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.<>c__DisplayClass10.<getdescription>b__f(Type type)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.GetDescription(Type domainServiceType)
at System.ServiceModel.DomainServices.Hosting.DomainServiceHost..ctor(Type domainServiceType, Uri[] baseAddresses)
at System.ServiceModel.DomainServices.Hosting.DomainServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses)
at System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
--- End of inner exception stack trace ---
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)
Process Name: WebDev.WebServer40
Process ID: 4712