We've just experienced a problem that's sort of difficult to diagnose. We get the error mentioned below. We've had it before, and it's been related to problems with the global.asax file. The thing is, this time we know it's not because that file has been untouched for quite some time. We fixed the problem purely by going into IIS and recycling the application pool manually.

Are there other situations where this error could occur that relate to recycling the app pool?

Thanks for any help!

2010-01-13 12:14:46,854\t(null)\t1.2.5 Unhandled exception in ASP.NET
System.TypeInitializationException: The type initializer for 'EPiServer.DataAbstraction.UnifiedPathInfo' threw an exception. ---> System.TypeInitializationException: The type initializer for 'EPiServer.CacheManager' threw an exception. ---> EPiServer.BaseLibrary.ClassFactoryException: ClassFactory not initialized
   at EPiServer.BaseLibrary.ClassFactory.get_Instance()
   at EPiServer.BaseLibrary.ClassFactory.IsRegistered(Type baseType)
   at EPiServer.CacheManager..cctor()
   --- End of inner exception stack trace ---
   at EPiServer.DataAbstraction.PermissionData.GetPermissionListFromCache(Permission permission)
   at EPiServer.Security.PrincipalInfo.IsPermitted(Permission permission)
   at EPiServer.Core.ExceptionManager.RenderHttpRuntimeError(Exception e)
   at EPiServer.Global.Global_Error(Object sender, EventArgs evt)
   --- End of inner exception stack trace ---
   at EPiServer.DataAbstraction.UnifiedPathInfo.Load(String path)
   at EPiServer.FileSystem.DefaultAccessControlList..ctor(String path)
   at EPiServer.Web.Hosting.DirectoryAccessControl..ctor(String virtualPath)
   at EPiServer.Web.Hosting.UnifiedDirectory.get_DirectoryAC()
   at EPiServer.Web.Hosting.UnifiedDirectory.QueryAccess()
   at EPiServer.Web.Hosting.UnifiedDirectory.QueryDistinctAccess(AccessLevel access)
   at EPiServer.Web.Hosting.VirtualPathVersioningProvider.GetDirectory(String virtualPath)
   at EPiServer.Web.Hosting.VirtualPathHandler.InitializeProviders(ProviderSettingsCollection providers)
   at EPiServer.Web.InitializationModule.InitializeVirtualPathProviders(VirtualPathElement vpElement)
   at EPiServer.Web.InitializationModule.<>c__DisplayClass32.<Initialize>b__18()
   at EPiServer.Web.InitializeEngine.Initialize()
   at EPiServer.Web.InitializationModule.Initialize(EPiServerSection config, Settings settings, ConnectionStringSettingsCollection connectionStringSettings)
   at EPiServer.Web.InitializationModule.<StaticInitialization>b__2()
   at EPiServer.Web.InitializeEngine.Initialize()
   at EPiServer.Web.InitializationModule.StaticInitialization()
   at EPiServer.Web.InitializationModule.Application_BeginRequest(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)