Was verursacht diesen Fehler? Fehler beim Ausführen der untergeordneten Anforderung für den Handler 'System.Web.Mvc.HttpHandlerUtil + ServerExecuteHttpHandlerWrapper'

Ich kann nicht herausfinden, warum ich diesen Fehler bekomme. Es passiert bei einem Ajax-Aufruf.

Jede Hilfe wird geschätzt. Danke!

Dies ist der vollständige Fehlertext:

  

- 21.06.2010 18:09:10 PM - System.Web.HttpException (0x80004005): Fehler beim Ausführen der untergeordneten Anforderung für den Handler 'System.Web.Mvc.HttpHandlerUtil + ServerExecuteHttpHandlerWrapper'. --- & gt; System.Web.HttpUnhandledException (0x80004005): Ausnahme vom Typ 'System.Web.HttpUnhandledException' wurde ausgelöst. --- & gt; System.Web.HttpException (0 x 80004005): OutputStream ist nicht verfügbar, wenn ein benutzerdefinierter TextWriter verwandt wird.      bei System.Web.HttpResponse.get_OutputStream ()      unter AjaxControlToolkit.ToolkitScriptManager.OutputCombinedScriptFile (HttpContext-Kontext) in C: \ AjaxBuild \ Ajax \ Server \ AjaxControlToolkit \ ToolkitScriptManager \ ToolkitScriptManager.cs: Zeile 286      unter AjaxControlToolkit.ToolkitScriptManager.OnInit (EventArgs e) unter C: \ AjaxBuild \ Ajax \ Server \ AjaxControlToolkit \ ToolkitScriptManager \ ToolkitScriptManager.cs: Zeile 246      bei System.Web.UI.Control.InitRecursive (Steuerelement NamingContainer)      bei System.Web.UI.Control.InitRecursive (Steuerelement NamingContainer)      bei System.Web.UI.Control.InitRecursive (Steuerelement NamingContainer)      bei System.Web.UI.Control.InitRecursive (Steuerelement NamingContainer)      bei System.Web.UI.Page.ProcessRequestMain (Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)      bei System.Web.UI.Page.HandleError (Ausnahme e)      bei System.Web.UI.Page.ProcessRequestMain (Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)      bei System.Web.UI.Page.ProcessRequest (Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)      bei System.Web.UI.Page.ProcessRequest ()      bei System.Web.UI.Page.ProcessRequestWithNoAssert (HttpContext-Kontext)      bei System.Web.UI.Page.ProcessRequest (HttpContext-Kontext)      bei System.Web.Mvc.ViewPage.ProcessRequest (HttpContext-Kontext)      bei ASP.views_listen_twittertimeline_aspx.ProcessRequest (HttpContext-Kontext) in c: \ Windows \ Microsoft.NET \ Framework \ v4.0.30319 \ Temporäre ASP.NET-Dateien \ root \ 8f8e9134 \ ff8a3ded \ App_Web_4vjkjyte.13.cs: Zeile 0      at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper. & lt; & gt; c__DisplayClass1.b__0 ()      at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper. & lt; & gt; c__DisplayClass4.b__3 ()      bei System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.Wrap [TResult] (Func 1 func) at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.Wrap(Action action) at System.Web.Mvc.HttpHandlerUtil.ServerExecuteHttpHandlerWrapper.ProcessRequest(HttpContext context) at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) at System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) at System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) at System.Web.Mvc.ViewPage.RenderView(ViewContext viewContext) at System.Web.Mvc.WebFormView.RenderViewPage(ViewContext context, ViewPage page) at System.Web.Mvc.WebFormView.Render(ViewContext viewContext, TextWriter writer) at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) at System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass14.<InvokeActionResultWithFilters>b__11() at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func 1 Fortsetzung)      at System.Web.Mvc.ControllerActionInvoker. & lt; & gt; c__DisplayClass14. & lt; & gt; c__DisplayClass16.b__13 ()      bei System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters (ControllerContext controllerContext, IList 1 filters, ActionResult actionResult) at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) at System.Web.Mvc.Controller.ExecuteCore() at System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) at System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) at System.Web.Mvc.MvcHandler.<>c__DisplayClass8.<BeginProcessRequest>b__4() at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass1.<MakeVoidDelegate>b__0() at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8 1.b__7 (IAsyncResult _)      bei System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult'1.End ()      bei System.Web.Mvc.MvcHandler.EndProcessRequest (IAsyncResult asyncResult)      bei System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest (IAsyncResult-Ergebnis)      bei System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute ()      at System.Web.HttpApplication.ExecuteStep (IExecutionStep Schritt, Boolean & amp; abgeschlossenSynchron)