WCF的一个怪异问题，高手请进

今天遇到一个问题，系统基于WCF框架，不同的服务完全相似的代码，一个就报错，一个成功。而且报错的代码其实际顺利运行完毕所有代码，事务也成功地提交了，只是在返回信息时WCF给了一个错误信息：

<Fault xmlns="http://schemas.microsoft.com/ws/2005/05/envelope/none"><Code><Value>Receiver</Value><Subcode><Value xmlns:a="http://schemas.microsoft.com/net/2005/12/windowscommunicationfoundation/dispatcher">a:InternalServiceFault</Value></Subcode></Code><Reason><Text xml:lang="zh-CN">message 对象已被释放。</Text></Reason><Detail><ExceptionDetail xmlns="http://schemas.datacontract.org/2004/07/System.ServiceModel" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><HelpLink i:nil="true"/><InnerException i:nil="true"/><Message>message 对象已被释放。</Message><StackTrace>   在 System.ServiceModel.Channels.ByteStreamMessage.InternalByteStreamMessage.get_Properties()
↵   在 System.ServiceModel.OperationContext.get_IncomingMessageProperties()
↵   在 System.ServiceModel.Web.IncomingWebRequestContext.get_UriTemplateMatch()
↵   在 System.ServiceModel.Description.WebHttpBehavior.TrySetupJavascriptCallback(String callbackParameterName)
↵   在 System.ServiceModel.Dispatcher.JavascriptCallbackMessageInspector.BeforeSendReply(Message& reply, Object correlationState)
↵   在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.BeforeSendReplyCore(MessageRpc& rpc, Exception& exception, Boolean& thereIsAnUnhandledException)</StackTrace><Type>System.ObjectDisposedException</Type></ExceptionDetail></Detail></Fault>

经过排查，发现是由于Web.Config文件中binging节点的 crossDomainScriptAccessEnabled="true" 属性导致的，去掉后一切正常。微软官方帮助文档说该属性是用来设定是否允许跨域脚本访问，不清楚为何该属性会导致上述问题。只不过我们项目暂时不存在跨域访问问题，故去掉没有大碍。

具体web.config配置文件和代码如下：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.serviceModel>
    <services>
      <service behaviorConfiguration="Service.ServiceBehavior" name="VME.Service.PictureService">
        <endpoint address="" behaviorConfiguration="VME.Service.ServiceAspNetAjaxBehavior"
          binding="webHttpBinding" contract="VME.Contract.IPictureService" bindingConfiguration="webBinding" />
      </service>
      <service behaviorConfiguration="Service.ServiceBehavior" name="VME.Service.ServiceService">
        <endpoint address="" behaviorConfiguration="VME.Service.ServiceAspNetAjaxBehavior"
          binding="webHttpBinding" contract="VME.Contract.IServiceService" bindingConfiguration="serviceBinding" />
      </service>
    </services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="VME.Service.ServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="Service.ServiceBehavior">
          <serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="50" maxConcurrentInstances="50"/>
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true" />
          <dataContractSerializer maxItemsInObjectGraph="2147483647"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <protocolMapping>
      <add binding="webHttpBinding" scheme="http" />
    </protocolMapping>
    <bindings>
      <webHttpBinding>
        <binding name="webBinding" useDefaultWebProxy="false" crossDomainScriptAccessEnabled="true"
                 maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" maxBufferPoolSize="2147483647"
                 sendTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:01:00" closeTimeout="00:01:00"
                 transferMode="Streamed" hostNameComparisonMode="StrongWildcard">
          <readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647" maxDepth="32" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
          <security mode="None"></security>
        </binding>
        <binding name="serviceBinding" useDefaultWebProxy="false" crossDomainScriptAccessEnabled="true"
                 maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" maxBufferPoolSize="2147483647"
                 sendTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:01:00" closeTimeout="00:01:00"
                 transferMode="Streamed" hostNameComparisonMode="StrongWildcard">
          <readerQuotas maxArrayLength="2147483647" maxStringContentLength="2147483647" maxDepth="32" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
          <security mode="None"></security>
        </binding>
      </webHttpBinding>
    </bindings>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"
      multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
</configuration>

[ServiceContract]
public interface IPictureService
{
    [OperationContract]
    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    bool SendIdCardPicture(Stream idCardImg);
}

[ServiceContract]
public interface IServiceService
{
    [OperationContract]
    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]
    bool AddService(Stream service);
}

上面IPictureService接口的程序是能正常返回信息，而IServiceService接口的程序就报错。

有高手请给予指点迷津，到底哪里出了问题。