asp.net-mvc – NLog在所有aspnet布局渲染器上抛出配置异常

我一直在努力在我的ASP.NET MVC 3应用程序上设置NLog v2，迄今为止已经运行得很好。 (我正在使用官方nuGet存储库中的包)但是，当我尝试更改日志布局以包含任何aspnet- *布局渲染器时，我得到一个配置错误。我将问题减少到以下最低用例：

在configSections块中：

<section name="nlog" type="NLog.Config.ConfigSectionHandler,NLog"/>

Nlog块：

<nlog xmlns="http://www.nlog-project.org/scheR_796_11845@as/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLscheR_796_11845@a-instance" throwExceptions="true">

<variable name="logDirectory" value="C:\Logs" />
<targets>
  <target name="logFile" xsi:type="File" filename="${logDirectory}\app.log"
      layout="${aspnet-user-identity}" />
</targets>       

<rules>
  <logger name="*" minlevel="Info" writeTo="logfile" />
</rules>

如果我改变布局，使用不属于aspnet *系列的任何渲染器的组合，这样做很好(我没有测试过，但是我已经看了很多)。我得到的错误在这里：

Configuration Error 
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. 

Parser Error message: An error occurred creaTing the configuration section handler for nlog: Exception occurred when loading configuration from C:\..[snip]..\web.config

source Error: 


Line 16: </configSections>
Line 17: 
Line 18:   <nlog xmlns="http://www.nlog-project.org/scheR_796_11845@as/NLog.xsd"
Line 19:     xmlns:xsi="http://www.w3.org/2001/XMLscheR_796_11845@a-instance" throwExceptions="true">
Line 20:

我真的不知道发生了什么。我不知道该渲染器会导致配置无效。我一直在大声喧哗，没有任何地方，所以我希望有人能帮忙。

谢谢！

<nlog xmlns="http://www.nlog-project.org/scheR_796_11845@as/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLscheR_796_11845@a-instance" 
      throwExceptions="true">

    <extensions>
        <add assembly="NLog.Extended" />
    </extensions>

    <variable name="logDirectory" value="C:\Logs" />

    <targets>
        <target name="logFile" 
                xsi:type="File" 
                filename="${logDirectory}\app.log"
                layout="${aspnet-user-identity} ${messagE}" />
    </targets>

    <rules>
        <logger name="*" minlevel="Debug" writeTo="logfile" />
    </rules>

</nlog>