sitecore - 浏览 Sitecore 内容树时出现 NullReferenceException

Question

我们安装了 Sitecore 6.4(Sitecore.NET 6.4.1(修订版 110621))，部署到负载平衡环境中的两台服务器。对于其中一台(且仅有一台)服务器，当您在内容编辑器中浏览内容树时，您会收到如下堆栈跟踪。它并不总是错误，但一旦你看到错误，它总是会发生。

[NullReferenceException: Object reference not set to an instance of an object.]
   Sitecore.Shell.Applications.ContentManager.ContentEditorForm.OnLoad(EventArgs e) +1636

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner) +0
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +639
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +38
   System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +35
   Sitecore.Reflection.ReflectionUtil.CallMethod(Type type, Object obj, String methodName, Boolean includeNonPublic, Boolean includeInherited, Object[] parameters) +37
   Sitecore.Reflection.ReflectionUtil.CallMethod(Object obj, String methodName, Boolean includeNonPublic, Boolean includeInherited, Object[] parameters) +66
   Sitecore.Web.UI.Sheer.ClientPage.OnLoad(EventArgs e) +420
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3064

Answer 1

正如 @techphoria414 所说，请确保您已阅读 Scalability Guide并确保您已将 ..Website\App_Config\Include\ScalabilitySettings.config.example 重命名为 ScalabilitySettings.config 并检查该配置中的各种设置。