错误5无法识别的属性“targetFramework”。请注意属性名称区分大小写
<?xml version="1.0"?>
<!--
   For more information on how to configure your ASP.NET application, please visit
   http://go.microsoft.com/fwlink/?LinkId=169433
   -->
<configuration>
     <system.web>
       <httpRuntime maxRequestLength="2097151" useFullyQualifiedRedirectUrl="true" executionTimeout="3160000"/>
       <compilation debug="true" targetFramework="4.0" />
问题显示在这里  这是什么情况  怎么修改?
     </system.web>
     <system.serviceModel>
         <behaviors>
             <serviceBehaviors>
                 <behavior name="">
                     <serviceMetadata httpGetEnabled="true" />
                     <serviceDebug includeExceptionDetailInFaults="false" />
                 </behavior>
             </serviceBehaviors>
         </behaviors>
         <bindings>
             <customBinding>
                 <binding name="CLOL.Web.postvedio.customBinding0">
                     <binaryMessageEncoding />
------解决方案--------------------你的站点在IIS上部署的Web使用的是基于.Net Framework2.0的Application Pool。
将其修改成基于.Net Framework4.0的Application pool就可以了。
------解决方案--------------------详细图参考:
http://blog.csdn.net/muchlin/article/details/6800863
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