由DWR1.0到DWR2.0出现的问题

做2级菜单 可以正常启动不报错误
在1.0的时候是好使的 我换成2.0的时候
就出现 Missing method or missing parameter converters 这个错误了
dwr.xml配置如下
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr//dwr20.dtd">
<dwr>
  <allow>
<convert converter="bean" match="com.adc.jadite.system.toppic.product.ProductGroupTwoBean">
<param name="include" value="id,id_l1,group_name,pic_url,display_order"/>
</convert>
<create creator="new" javascript="ProductManage">
<param name="class" value="com.adc.jadite.system.toppic.product.ProductManage"/>
   <include method="getProduct_Group_Two"/>
  </create>
</allow>
</dwr>

不知道问题出在哪 希望各位给予解答 谢谢了

DWR2.0更新内容，请参考：
The callback-as-first-parameter system has been deprecated since version 0.9 in favor of the callback-as-last-parameter system. In version 2.0 we removed support for the first-parameter option because it caused some hard to detect bugs with null parameters. From version 2.0 the callback must be the last parameter, and can not be the first parameter.