net1stacktrace

[InvalidOperationException: Circular reference found for content type: 'Net1EPi.Models.Pages.LandingPage']
   EPiServer.DataAbstraction.TypeReferenceAnalyzer.ValidateCircularReference(Type type, Type typePropertiesNeedsToInheritFrom, List`1 usedTypes) +560
   EPiServer.DataAbstraction.TypeReferenceAnalyzer.ValidateCircularReference(Type type, Type typePropertiesNeedsToInheritFrom, List`1 usedTypes) +341
   EPiServer.DataAbstraction.TypeReferenceAnalyzer.ValidateCircularReference(Type type, Type typePropertiesNeedsToInheritFrom, List`1 usedTypes) +341
   EPiServer.DataAbstraction.TypeReferenceAnalyzer.Analyze(Type type) +132
   EPiServer.DataAbstraction.DefaultContentTypeRepository.ValidateModelType(ContentType contentType) +165
   EPiServer.DataAbstraction.DefaultContentTypeRepository.Save(ContentType contentType) +117
   EPiServer.DataAbstraction.RuntimeModel.ContentTypeSynchronizer.CreateType(ContentTypeModel contentModel) +212
   EPiServer.DataAbstraction.RuntimeModel.ContentTypeModelRegister.CommitTypes(Boolean deleteUnusedTypes) +438
   EPiServer.DataAbstraction.RuntimeModel.ContentTypeModelScanner.Sync(Boolean commitChanges) +261
   EPiServer.Initialization.ModelSyncInitialization.Initialize(InitializationEngine context) +456
   EPiServer.Framework.Initialization.ModuleNode.Execute(Action a, String key) +56
   EPiServer.Framework.Initialization.InitializationEngine.InitializeModules() +244

[InitializationException: Initialize action failed for Initialize on class EPiServer.Initialization.ModelSyncInitialization, EPiServer, Version=8.8.0.0, Culture=neutral, PublicKeyToken=8fe83dea738b45b7]
   EPiServer.Framework.Initialization.InitializationEngine.InitializeModules() +750
   EPiServer.Framework.Initialization.InitializationEngine.Initialize(HostType hostType) +158
   EPiServer.Framework.Initialization.InitializationModule.Initialize(HostType hostType) +903
   EPiServer.Framework.Initialization.InitializationModule.FrameworkInitialization(HostType hostType) +103
   EPiServer.Global..ctor() +108
   Net1EPi.EPiServerApplication..ctor() +43
   ASP.global_asax..ctor() in c:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\net1epi\3281ff5b\e1732159\App_global.asax.0.cs:0

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
   System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +138
   System.Activator.CreateInstance(Type type, Boolean nonPublic) +105
   System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark) +1528
   System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) +191
   System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture) +27
   System.Web.HttpRuntime.CreateNonPublicInstance(Type type, Object[] args) +82
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +317
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +343

[HttpException (0x80004005): Exception has been thrown by the target of an invocation.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +579
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +120
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +712