Unable to generate SVG document from XML and XSL

hi all,

i'm new to svg, and am trying to generate an svg document from xml and xsl, but the result has been discouraging..

i have done up appropriate configurations in stxx.pipelines (transform type as svg and direct to the xsl), web.xml (added the mimetype), and the struts-config file (to direct from the action class to the xsl). however, i'm still thrown with an error described below:

would appreciate any help from anyone, thanks a lot!

[INFO] transform.CachedXSLTransformer (info:140) - building formatting object tree
[INFO] setting up fonts
<Jul 21, 2003 9:49:21 AM SGT> <Error> <HTTP> <BEA-101020> <[ServletContext(id=10120123,name=ihomes,context-path=/ihomes)
] Servlet failed with Exception
java.lang.RuntimeException: java.lang.NullPointerException
at org.apache.xalan.transformer.TransformerImpl.run(T ransformerImpl.java:3170)
at org.apache.xalan.transformer.TransformerHandlerImp l.endDocument(TransformerHandlerImpl.java:433)
at com.oroad.stxx.transform.CachedFOPTransformer.tran sform(CachedFOPTransformer.java:228)
at com.oroad.stxx.transform.TransformerHandler.proces sActionTransform(TransformerHandler.java:203)
at com.oroad.stxx.plugin.RequestProcessorHelper.proce ssStxxDefinition(RequestProcessorHelper.java:260)
at com.oroad.stxx.plugin.StxxRequestProcessor.process ForwardConfig(StxxRequestProcessor.java:133)
at org.apache.struts.action.RequestProcessor.process( RequestProcessor.java:279)
at org.apache.struts.action.ActionServlet.process(Act ionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(Actio nServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletI nvocationAction.run(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeSe rvlet(ServletStubImpl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeSe rvlet(ServletStubImpl.java:305)
at weblogic.servlet.internal.WebAppServletContext$Ser vletInvocationAction.run(WebAppServletContext.java :6350)
at weblogic.security.acl.internal.AuthenticatedSubjec t.doAs(AuthenticatedSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(Se curityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.inv okeServlet(WebAppServletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execu te(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThrea d.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.ja va:170)
>