Error can't load Servlet org.apache.struts.action.ActionServlet

Hi,

I have SAP J2EE 6.20 installed on linux machine. I am trying to deploy struts framework based application and while deploying it..... I am getting error message:

Error can't load Servlet org.apache.struts.action.ActionServlet : java.lang.NoClassDefFoundError: org/xml/sax/SAXException

07 19:27:48 - ***********************************************************

08/10/07 19:27:48 - Applying user role management mappings.

08/10/07 19:27:48 - Start updating EAR-file...D:\SAPJ2EE Client\deploying\sambodh\sambodh.ear

08/10/07 19:28:26 - Temp files deleted...

08/10/07 19:28:26 - Ear-file updated successfully for 37860ms.

08/10/07 19:28:27 - Start deploying ...

08/10/07 19:30:35 - Ear-file uploaded to server for 128047ms.

08/10/07 19:30:37 - Successfuly deployed! Deployment took 1953ms.

08/10/07 19:30:37 - WARNING : Deploy service return folowing WARNINGs:

Error can't load Servlet org.apache.struts.action.ActionServlet : java.lang.NoClassDefFoundError: org/xml/sax/SAXException

Deployment took 1953ms.

08/10/07 19:30:37 - ***********************************************************

First time when I got this error, I added struts.jar in my server's <inst_dir>/alone/additional_libs/...... but then also error still exists... Do I have to start SAP J2EE instance once again and then deploy my application?

Can anyone help me out in this as this is very very very imp.

regards