All
I have a form(s) with 4 tabs. When moving through/around the tabs I will receive a 500 error. It is not consistent with any particular tab selected though it does happen every time moving within the tabs

Chris

Here is the message from the screen (Tomcat Logs below)

#########################################

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException
com.bas.webapp.actions.b.a(Unknown Source)
com.bas.webapp.actions.EntityAction.newForm(Unknown Source)
com.bas.webapp.actions.UpdateEntityAction.doExecute(Unknown Source)
com.cc.framework.adapter.struts.ActionUtil.execute(Unknown Source)
com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
com.cc.framework.adapter.struts.RequestProcessorUtil.processAction(Unknown Source)
com.cc.framework.adapter.struts.FWRequestProcessor.processActionPerform(Unknown Source)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

java.lang.NullPointerException
com.bas.webapp.actions.EntityActionUtils$c.a(Unknown Source)
com.bas.webapp.actions.EntityActionUtils.populateReferences(Unknown Source)
com.bas.webapp.actions.EntityAction.populateReference(Unknown Source)
com.bas.webapp.actions.EntityAction.populateSectionReferences(Unknown Source)
com.bas.webapp.actions.EntityAction.a(Unknown Source)
com.bas.webapp.actions.EntityAction.newForm(Unknown Source)
com.bas.webapp.actions.UpdateEntityAction.doExecute(Unknown Source)
com.cc.framework.adapter.struts.ActionUtil.execute(Unknown Source)
com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
com.cc.framework.adapter.struts.RequestProcessorUtil.processAction(Unknown Source)
com.cc.framework.adapter.struts.FWRequestProcessor.processActionPerform(Unknown Source)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

######################################Back button issues
TOMCAT LOGS
2008-04-17 15:59:32 StandardContext[/balancer]org.apache.webapp.balancer.BalancerFilter: init(): ruleChain: [org.apache.webapp.balancer.RuleChain: [org.apache.webapp.balancer.rules.URLStringMatchRule: Target string: News / Redirect URL: http://www.cnn.com], [org.apache.webapp.balancer.rules.RequestParameterRule: Target param name: paramName / Target param value: paramValue / Redirect URL: http://www.yahoo.com], [org.apache.webapp.balancer.rules.AcceptEverythingRule: Redirect URL: http://jakarta.apache.org]]
2008-04-17 16:05:54 StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at com.bas.webapp.actions.EntityActionUtils$c.a(Unknown Source)
at com.bas.webapp.actions.EntityActionUtils.populateReferences(Unknown Source)
at com.bas.webapp.actions.EntityAction.populateReference(Unknown Source)
at com.bas.webapp.actions.EntityAction.populateSectionReferences(Unknown Source)
at com.bas.webapp.actions.EntityAction.a(Unknown Source)
at com.bas.webapp.actions.EntityAction.newForm(Unknown Source)
at com.bas.webapp.actions.UpdateEntityAction.doExecute(Unknown Source)
at com.cc.framework.adapter.struts.ActionUtil.execute(Unknown Source)
at com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
at com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
at com.cc.framework.adapter.struts.RequestProcessorUtil.processAction(Unknown Source)
at com.cc.framework.adapter.struts.FWRequestProcessor.processActionPerform(Unknown Source)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
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:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198-)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118-)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Unknown Source)

2008-04-17 16:06:32 StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at com.bas.webapp.actions.EntityActionUtils$c.a(Unknown Source)
at com.bas.webapp.actions.EntityActionUtils.populateReferences(Unknown Source)
at com.bas.webapp.actions.EntityAction.populateReference(Unknown Source)
at com.bas.webapp.actions.EntityAction.populateSectionReferences(Unknown Source)
at com.bas.webapp.actions.EntityAction.a(Unknown Source)
at com.bas.webapp.actions.EntityAction.newForm(Unknown Source)
at com.bas.webapp.actions.UpdateEntityAction.doExecute(Unknown Source)
at com.cc.framework.adapter.struts.ActionUtil.execute(Unknown Source)
at com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
at com.cc.framework.adapter.struts.FWAction.execute(Unknown Source)
at com.cc.framework.adapter.struts.RequestProcessorUtil.processAction(Unknown Source)
at com.cc.framework.adapter.struts.FWRequestProcessor.processActionPerform(Unknown Source)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
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:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198-)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118-)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Unknown Source)