Just in case anybody else runs into the same problem, we believe that we've found the cause & solution though only checked in test environment so far. It's got nothing to do with NHibernate but is actually a bug in Windows (Vista onwards) where the IIS application pool's profile was unloaded after a scheduled task ran with the same account credentials (said task is a daily job that's part of the same application, hence shares the service account). There's a GP setting which resolves it, or simply running the scheduled task with different credentials - see http://blogs.msdn.com/b/distributedservices/archive/2009/11/06/a-com-ser ver-application-may-stop-working-on-windows-server-2008.aspx.
This solution was found without the use of goats. <http://www.staff.uni-mainz.de/neuffer/scsi/fun.html> /Pete -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Pete Appleton Sent: 13 December 2012 12:29 To: [email protected] Subject: [nhusers] Creating a proxy instance failed with REGDB_E_CLASSNOTREG Hi, We've encountered the stack trace below twice in an ASP.NET application but have no clues as to the cause or how to reproduce it. Does anybody else have any knowledge or experience of this please, or even just a couple of goats we can sacrifice? Our concrete knowledge can be summarised as the following: - NHibernate v3.3.1 + Envers 1.4GA - In both cases it occurred when a user logged on - In one case this was the first logon of the day, in the other it was not - In both cases it was resolved by recycling the application pool - Until the app pool was recycled the site was completely unusable Thanks, Pete 2012-12-13 05:09:59,543 [7]: ERROR NHibernate.Proxy.DefaultProxyFactory - Creating a proxy instance failed System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModule(RuntimeAssemb ly containingAssembly, Boolean emitSymbolInfo, String name, String filename, StackCrawlMarkHandle stackMark, IntPtr& pInternalSymWriter, ObjectHandleOnStack retModule, Boolean fIsTransient, Int32& tkFile) at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModuleInternalNoLock (String name, String fileName, Boolean emitSymbolInfo, StackCrawlMark& stackMark) at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModuleInternal(Strin g name, String fileName, Boolean emitSymbolInfo, StackCrawlMark& stackMark) at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModule(String name, String fileName, Boolean emitSymbolInfo) at NHibernate.Proxy.DynamicProxy.DefaultProxyAssemblyBuilder.DefineDynamicM odule(AssemblyBuilder assemblyBuilder, String moduleName) at NHibernate.Proxy.DynamicProxy.ProxyFactory.CreateUncachedProxyType(Type baseType, Type[] baseInterfaces) at NHibernate.Proxy.DynamicProxy.ProxyFactory.CreateProxyType(Type baseType, Type[] interfaces) at NHibernate.Proxy.DynamicProxy.ProxyFactory.CreateProxy(Type instanceType, IInterceptor interceptor, Type[] baseInterfaces) at NHibernate.Proxy.DefaultProxyFactory.GetProxy(Object id, ISessionImplementor session) at NHibernate.Tuple.Entity.AbstractEntityTuplizer.CreateProxy(Object id, ISessionImplementor session) at NHibernate.Persister.Entity.AbstractEntityPersister.CreateProxy(Object id, ISessionImplementor session) at NHibernate.Event.Default.DefaultLoadEventListener.CreateProxyIfNecessary (LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options, IPersistenceContext persistenceContext) at NHibernate.Event.Default.DefaultLoadEventListener.ProxyOrLoad(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options) at NHibernate.Event.Default.DefaultLoadEventListener.OnLoad(LoadEvent event, LoadType loadType) at NHibernate.Impl.SessionImpl.FireLoad(LoadEvent event, LoadType loadType) at NHibernate.Impl.SessionImpl.InternalLoad(String entityName, Object id, Boolean eager, Boolean isNullable) at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session) at NHibernate.Type.EntityType.ResolveIdentifier(Object value, ISessionImplementor session, Object owner) at NHibernate.Engine.TwoPhaseLoad.InitializeEntity(Object entity, Boolean readOnly, ISessionImplementor session, PreLoadEvent preLoadEvent, PostLoadEvent postLoadEvent) at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session, Boolean readOnly) at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies) at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISession Implementor session, QueryParameters queryParameters, Boolean returnProxies) at NHibernate.Loader.Loader.LoadCollection(ISessionImplementor session, Object id, IType type) at NHibernate.Loader.Collection.CollectionLoader.Initialize(Object id, ISessionImplementor session) at NHibernate.Persister.Collection.AbstractCollectionPersister.Initialize(O bject key, ISessionImplementor session) at NHibernate.Event.Default.DefaultInitializeCollectionEventListener.OnInit ializeCollection(InitializeCollectionEvent event) at NHibernate.Impl.SessionImpl.InitializeCollection(IPersistentCollection collection, Boolean writing) at NHibernate.Collection.AbstractPersistentCollection.Initialize(Boolean writing) at NHibernate.Collection.AbstractPersistentCollection.Read() at NHibernate.Collection.Generic.PersistentGenericSet`1.System.Collections. Generic.IEnumerable<T>.GetEnumerator() at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at XXX.WebSite.Models.UserModel..ctor(User user) at XXX.WebSite.Controllers.SessionController.Login(LoginModel logon) -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] <mailto:[email protected]> . To unsubscribe from this group, send email to [email protected] <mailto:[email protected]> . For more options, visit this group at http://groups.google.com/group/nhusers?hl=en <http://groups.google.com/group/nhusers?hl=en> . !DSPAM:1,50c9ca4980901945357274! -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. 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