After dropping the build of ICEfaces from Tuesday, September 29 into the ICEpack, noticed a regression in the expandableTable component:

java.lang.ArrayIndexOutOfBoundsException: 1
        at com.icesoft.faces.component.ext.renderkit.TableRenderer.getWidthFromColumnWidthsArray(TableRenderer.java:1082)
        at com.icesoft.faces.component.ext.renderkit.TableRenderer.encodeChildren(TableRenderer.java:777)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
        at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:358)
        at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:96)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
        at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:358)
        at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:96)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
        at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:358)
        at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:365)
        at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:96)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837)
        at com.icesoft.faces.component.util.CustomComponentUtils.renderChild(CustomComponentUtils.java:339)
        at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.writeTabCell(PanelTabSetRenderer.java:977)
        at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.encodeEnd(PanelTabSetRenderer.java:423)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:503)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:497)
        at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:282)
        at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:159)
        at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
        at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:19)
        at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:132)
        at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:74)
        at com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:31)
        at com.icesoft.faces.webapp.http.common.standard.PathDispatcherServer.service(PathDispatcherServer.java:24)
        at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:16)
        at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
        at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:53)
        at com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:26)
        at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:23)
        at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:131)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:56)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        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:128)
        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:286)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:619)

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Here is the dataTable tag, the bindings are passed in as attributes of the facelet composite component and in this case nothing is passed in for columnWidths:

    <ice:dataTable bgcolor="#{bgcolor}"
                   binding="#{binding}"
                   border="#{border}"
                   cellpadding="#{cellpadding}"
                   cellspacing="#{cellspacing}"
                   columnClasses="#{columnClasses}"
                   columnWidths="#{columnWidths}"
                   dir="#{dir}"
                   first="#{first}"
                   footerClass="#{footerClass}"
                   frame="#{frame}"
                   headerClass="#{headerClass}"
                   headerClasses="#{headerClasses}"
                   id="expandableTable"
                   lang="#{lang}"
                   rendered="true"
                   rowClasses="#{rowClasses}"
                   rows="#{rows}"
                   rules="#{rules}"
                   scrollHeight="#{scrollHeight}"
                   sortAscending="#{sortAscending}"
                   sortColumn="#{sortColumn}"
                   style="#{style}"
                   styleClass="#{styleClass}"
                   summary="#{summary}"
                   title="#{title}"
                   value="#{value}"
                   var="item"
                   width="#{width}">

Yip said this is related to ICE-3943