请做过GZIP的朋友帮我来看看这个错误！sys未定义。。。

<?xml version="1.0"?>
<configuration>  <configSections>
    <sectionGroup name="DCWeb">
      <section name="HttpCompress" 
type="DC.Web.HttpCompress.Configuration, DC.Web.HttpCompress"/>
    </sectionGroup>  </configSections>
  <system.web>
    </pages>
    <!--
          Set compilation debug="true" to insert debugging
          symbols into the compiled page. Because this
          affects performance, set this value to true only
          during development.
    -->    <compilation debug="false">
      <assemblies>      </assemblies>
    </compilation>
    <httpHandlers>
      <remove verb="*" path="*.asmx"/>      <add verb="*" path="js.axd,css.axd" 
type="DC.Web.HttpCompress.CompressionHandler,DC.Web.HttpCompress"/>
    </httpHandlers>    <httpModules>      <add name="HttpCompressModule" 
type="DC.Web.HttpCompress.HttpModule,DC.Web.HttpCompress"/>
    </httpModules>    <sessionState mode="InProc" timeout="120"></sessionState>
    <customErrors defaultRedirect="GenericErrorPage.htm"  mode="Off"/>
    <httpRuntime maxRequestLength="40960" executionTimeout="300"
 useFullyQualifiedRedirectUrl="false"/>
  </system.web>
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules>
      <add name="ScriptModule" preCondition="integratedMode" 
type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, 
PublicKeyToken=31bf3856ad364e35"/>
    </modules>
    <handlers>
      <remove name="WebServiceHandlerFactory-Integrated"/>
          </handlers>
  </system.webServer>  <DCWeb>
      <HttpCompress  compressionType="GZip">
        <PathSettings jsPath="javascript" cssPath="css" />
        <IncludedMimeTypes>
          <add mime="text/html" />
          <add mime="text/css" />
          <add mime="application/x-javascript" />
        </IncludedMimeTypes>
      </HttpCompress>
    </DCWeb>
</configuration>解析到/WebResource.axd?d=YmZKHSwiEyZrMVJM9pqXlg2&t=633596147390468750 没有报错，
但是解析到：/ScriptResource.axd?d=0xVjTbLzZsmJ1nbQpgPN
就报错了，sys未定义。没有用压缩不会报错。
请问怎么修改呢？