DWR

I am trying to upload an image through a DWR call in a struts2.0.11 application.

My dwr.jar version details are:
version: 3.0.M1
scc-info: $Id: dwr-version.properties,v 1.63 2008/02/20 14:53:16 joe_walker Exp $

My dwr.xml entries are:
<create creator="new" javascript="imageUpload">
<param name="class" value="mypackage.TestImageUpload"/>
<include method="uploadFiles"/>
</create>

and the web.xml entries:
...
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>

<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>

<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
....

When i am using the file upload i am getting this alert: "Failed to find parameter: callCount"
The dwr call to upload the image works fine if the struts filter mappings are commented(which is tested as a separate html as well as jsp), but the application fails as it requires the filter mapping entries...