NullPointerException occurred, see following stack trace:

org.apache.tapestry.BindingException
Unable to resolve expression 'isConfigurationAdministrable(page.configuration)' for com.pmease.quickbuild.web.components.ConfigurationBorder@14ff6cb[RepositoryEditor/$ConfigurationBorder].
binding: ExpressionBinding[RepositoryEditor/$ConfigurationBorder isConfigurationAdministrable(page.configuration)]
location: context:/WEB-INF/ConfigurationBorder.html, line 24
   
ognl.MethodFailedException
Method "isConfigurationAdministrable" failed for object com.pmease.quickbuild.web.components.ConfigurationBorder@14ff6cb[RepositoryEditor/$ConfigurationBorder]
   
java.lang.NullPointerException
 
Stack Trace:
com.pmease.quickbuild.model.Configuration.isAncestorOf(Configuration.java:1522)
com.pmease.quickbuild.security.SecurityHelper.isConfigurationAdministrable(SecurityHelper.java:158)
com.pmease.quickbuild.web.components.QuickBuildComponent.isConfigurationAdministrable(QuickBuildComponent.java:69)
sun.reflect.GeneratedMethodAccessor420.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585)
ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:491)
ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:785)
ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:61)
ognl.OgnlRuntime.callMethod(OgnlRuntime.java:819)
ognl.ASTMethod.getValueBody(ASTMethod.java:75)
ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
ognl.SimpleNode.getValue(SimpleNode.java:210)
ognl.Ognl.getValue(Ognl.java:333)
ognl.Ognl.getValue(Ognl.java:310)
org.apache.tapestry.binding.ExpressionBinding.resolveProperty(ExpressionBinding.java:201)
org.apache.tapestry.binding.ExpressionBinding.getObject(ExpressionBinding.java:194)
org.apache.tapestry.binding.AbstractBinding.getBoolean(AbstractBinding.java:77)
org.apache.tapestry.param.BooleanParameterConnector.setParameter(BooleanParameterConnector.java:51)
org.apache.tapestry.param.ParameterManager.setParameters(ParameterManager.java:105)
org.apache.tapestry.AbstractComponent.prepareForRender(AbstractComponent.java:891)
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:846)
org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:118)
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:850)
org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:617)
org.apache.tapestry.form.Form.renderComponent(Form.java:362)
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:850)
org.apache.tapestry.form.Form.rewind(Form.java:568)
org.apache.tapestry.engine.RequestCycle.rewindForm(RequestCycle.java:432)
org.apache.tapestry.form.Form.trigger(Form.java:582)
org.apache.tapestry.engine.DirectService.service(DirectService.java:169)
org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:889)
org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:198)
org.apache.tapestry.ApplicationServlet.doPost(ApplicationServlet.java:327)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:292)
net.sf.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:84)
net.sf.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:182)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:153)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:114)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:206)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:305)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:226)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:173)
net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:125)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
com.pmease.quickbuild.QuickBuildFilter.doFilter(QuickBuildFilter.java:34)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
java.lang.Thread.run(Thread.java:595)