在VS 2010中构建网站项目时，我收到以下异常：
The pre-application start initialization method Run on type WebActivator.ActivationManager threw an exception with the following error message: Exception has been thrown by the target of an invocation..
我该怎么去调试？当我在VS.NET和命令行(例如，通过NAnt / MSBuild)中构建时，会发生这种情况。
解决方法
要解决这个问题，您需要将-errorstack参数提供给aspnetcompiler。那么当它失败时，你不仅可以获得你现在看到的异常的堆栈跟踪，还可以获得它正在包装的InnerException。例如，当构建错误是由于未加载Cassette dll的问题引起的时，这里是输出：
error ASPRUNTIME: The pre-application start initialization method Run on type We bActivator.ActivationManager threw an exception with the following error message : Exception has been thrown by the target of an invocation.. [TypeLoadException]: Could not load type 'Cassette.Configuration.ICassetteConfig uration' from assembly 'Cassette,Version=0.8.1.0,Culture=neutral,PublicKeyTok en=null'. at Cassette.Web.StartUp..cctor() [TypeInitializationException]: The type initializer for 'Cassette.Web.StartUp' t hrew an exception. at Cassette.Web.StartUp.PreApplicationStart() [TargetInvocationException]: Exception has been thrown by the target of an invoc ation. at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method,Ob ject target,Object[] arguments,SignatureStruct& sig,MethodAttributes methodAt tributes,RuntimeType typeOwner) at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method,Obj ect target,Signature sig,MethodAttributes methodAttributes,RuntimeType typeOwner) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj,BindingFlags invoke Attr,Binder binder,Object[] parameters,CultureInfo culture,Boolean skipVisib ilityChecks) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj,CultureInfo culture) at System.Reflection.MethodBase.Invoke(Object obj,Object[] parameters) at WebActivator.BaseActivationMethodAttribute.InvokeMethod() at WebActivator.ActivationManager.RunActivationMethods[T]() at WebActivator.ActivationManager.RunPreStartMethods() at WebActivator.ActivationManager.Run() [InvalidOperationException]: The pre-application start initialization method Run on type WebActivator.ActivationManager threw an exception with the following er ror message: Exception has been thrown by the target of an invocation.. at System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection` 1 methods) at System.Web.Compilation.BuildManager.CallPreStartInitMethods() at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appMan ager,IApplicationHost appHost,IConfigMapPathFactory configMapPathFactory,Host ingEnvironmentParameters hostingParameters,PolicyLevel policyLevel,Exception a ppDomainCreationException) [HttpException]: The pre-application start initialization method Run on type Web Activator.ActivationManager threw an exception with the following error message: Exception has been thrown by the target of an invocation.. at System.Web.Compilation.ClientBuildManager.EnsureHostCreated() at System.Web.Compilation.ClientBuildManager.PrecompileApplication(ClientBuil dManagerCallback callback,Boolean forceCleanBuild) at System.Web.Compilation.Precompiler.Main(String[] args)
