Getting error when migrated the was 5.1 to 6.1

Hello,
I have found the following error while i am call action when clicking the image from search result of my application.
Could anybody help me on this.

[11/11/10 14:48:03:340 IST] 00000020 ServletWrappe E   SRVE0068E: Uncaught exception thrown in one of the service methods of the servlet: action. Exception thrown : javax.servlet.ServletException: BeanUtils.populate
	at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:497)
	at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:798)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:205)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
	at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
	at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:92)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
	at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1433)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:93)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:394)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:274)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
	at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:152)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:213)
	at com.ibm.io.async.AbstractAsyncFuture.fireCompletionActions(AbstractAsyncFuture.java:195)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:194)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:741)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:863)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1510)
---- Begin backtrace for Nested Throwables
java.lang.StringIndexOutOfBoundsException
	at java.lang.String.substring(String.java:1081)
	at renault.ppm.backend.fop.recherche.VueFopMontage.getTechnique(VueFopMontage.java:110)
	at renault.ppm.backend.fop.recherche.VueFopMontage.getIdLib(VueFopMontage.java:151)
	at renault.ppm.backend.fop.recherche.VueFop.toString(VueFop.java:179)
	at java.lang.String.valueOf(String.java:1475)
	at java.lang.StringBuffer.append(StringBuffer.java:232)
	at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:888)

Thanks in advace

Regards
Ganesan

Hi Ganesan Ramakrishnan,

Can i have a full description please.

I thing your program is encountered StringIndexOutOfBoundsException.

Have you cleared the bugs .

Are you certain that you are running the same version of code on both servers? Do you have a source control system and automated builds?

Hi,
Thanks for your reply. I am not find the solution yet.

@Mohan - Originally i am doing migration from was 5.1 to rad7. I am having nested tags in my jsp page.
It's working properly in was 5.1. but in rad7 it showing the error page which i described in my first post.
I think there will be a problem in <nested:hidden> within the <nested:iterate> tag. I am trying to find the out the exact problem.

@Joe Ess - yes i am using the same code in both the servers. but you knew, jdk, jsp servlet versions differs in rad7 when comparing was5.1.

Regards
Ganesh