页面错误信息如下：

“/”应用程序中的服务器错误。
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由于应用程序配置不正确，应用程序未能启动。重新安装应用程序可能会纠正这个问题。 (异常来自 HRESULT:0x800736B1)
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.Runtime.InteropServices.COMException: 由于应用程序配置不正确，应用程序未能启动。重新安装应用程序可能会纠正这个问题。 (异常来自 HRESULT:0x800736B1)

源错误:

执行当前 Web 请求期间生成了未处理的异常。可以使用下面的异常堆栈跟踪信息确定有关异常原因和发生位置的信息。 

堆栈跟踪:

[COMException (0x800736b1): 由于应用程序配置不正确，应用程序未能启动。重新安装应用程序可能会纠正这个问题。 (异常来自 HRESULT:0x800736B1)]

[FileLoadException: 未能加载文件或程序集“Microsoft.SqlServer.BatchParser, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91”或它的某一个依赖项。由于应用程序配置不正确，应用程序未能启动。重新安装应用程序可能会纠正这个问题。 (异常来自 HRESULT:0x800736B1)]
   System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
   System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +54
   System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +211
   System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +141
   System.Reflection.Assembly.Load(String assemblyString) +25
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +32

[ConfigurationErrorsException: 未能加载文件或程序集“Microsoft.SqlServer.BatchParser, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91”或它的某一个依赖项。由于应用程序配置不正确，应用程序未能启动。重新安装应用程序可能会纠正这个问题。 (异常来自 HRESULT:0x800736B1)]
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +596
   System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +211
   System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +46
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +177
   System.Web.Compilation.WebDirectoryBatchCompiler..ctor(VirtualDirectory vdir) +267
   System.Web.Compilation.BuildManager.BatchCompileWebDirectoryInternal(VirtualDirectory vdir, Boolean ignoreErrors) +39
   System.Web.Compilation.BuildManager.BatchCompileWebDirectory(VirtualDirectory vdir, VirtualPath virtualDir, Boolean ignoreErrors) +429
   System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +75
   System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +582
   System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +93
   System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +111
   System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +54
   System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +31
   System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +40
   System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +139
   System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +128
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +161

原因是发布的项目Bin目录下多了一个：Microsoft.SqlServer.BatchParser.dll 文件，删除这个文件后正常

再检查，发现是项目里不知道什么时候添加了：Microsoft.VisualStudio.TeamSystem.Data.UnitTesting 和 Microsoft.VisualStudio.QualityTools.UnitTestFramework 2个引用
这是由于添加过数据库单元测试造成的……

解决方法：把刚才2个引用删除，就OK了