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java.lang.NullPointerException at org.obiba.onyx.jade.core.wicket.instrument.InstrumentManualOutputParameterPanel$OutputFragment$2.isRequired(InstrumentManualOutputParameterPanel.java:152) at org.obiba.onyx.wicket.data.DataField$InputFragment$5.isRequired(DataField.java:540) at org.apache.wicket.markup.html.form.FormComponent.checkRequired(FormComponent.java:630) at org.apache.wicket.markup.html.form.FormComponent.validateRequired(FormComponent.java:1559) at org.apache.wicket.markup.html.form.FormComponent.validate(FormComponent.java:1172) at org.apache.wicket.markup.html.form.Form$23.validate(Form.java:2178) at org.apache.wicket.markup.html.form.Form$ValidationVisitor.formComponent(Form.java:174) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:439) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrderHelper(FormComponent.java:426) at org.apache.wicket.markup.html.form.FormComponent.visitFormComponentsPostOrder(FormComponent.java:398) at org.apache.wicket.markup.html.form.Form.visitFormComponentsPostOrder(Form.java:1240) at org.apache.wicket.markup.html.form.Form.validateComponents(Form.java:2170) at org.apache.wicket.markup.html.form.Form.validate(Form.java:2150) at org.apache.wicket.markup.html.form.Form.process(Form.java:1012) at org.apache.wicket.markup.html.form.Form.process(Form.java:957) at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:921) at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:135) at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:177) at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:302) at org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:157) at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486) at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:319) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:300) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:679)