swfupload 上传遇到404错误

debug日志看不出来啥, 监控也监控不到, 查到配置config如下: 主要是给一个Path地址:

<?xml version="1.0"?>

<configuration>

  <appSettings/>

  <connectionStrings/>

  <system.web>

    <compilation debug="true"/>

    <authentication mode="None"/>

    <customErrors mode="Off"/>

  </system.web>

  <location path="upload.aspx">

    <system.web>

      <httpRuntime maxRequestLength="102400" executionTimeout="3600" />

    </system.web>

  </location>

  <system.webServer>

    <security>

      <requestFiltering>

        <requestLimits maxAllowedContentLength="100000000" />

      </requestFiltering>

    </security>

  </system.webServer>

</configuration>