我已經完成安裝步驟了,但要使用它來產生一個 website 時,卻出現以下錯誤...

BUILD FAILED
C:\Program Files\Apache Group\apache-forrest-0.6\src\core\targets\validate.xml:143: Parser org.apache.crimson.parser.XMLReaderImpl doesn't recognize feature http://apache.org/xml/features/validation/dynamic

** validate.xml:143 line

  <target name="validate-xdocs" depends="validation-props" if="validate.xdocs"
      description="Validate the project xdocs">
143 ==>    <xmlvalidate failonerror="${forrest.validate.xdocs.failonerror}" lenient="no" warn="yes">
      <attribute name="http://apache.org/xml/features/validation/dynamic"  value="true"/>
      <xmlcatalog refid="fcatalog" />
      <fileset dir="${xdocs-dir}"
        includes="${forrest.validate.xdocs.includes}"
        excludes="${forrest.validate.xdocs.excludes}"/>
    </xmlvalidate>
    <echo message="...validated xdocs"/>
  </target>

不知道應該怎麼解決....><
希望知道的人幫忙一下,感謝~~~