Hello. I have exception with rich:listShuttle.

Firefox 3.6 and richfaces 3.3.3

it happens when i do many many clicks in h:selectManyCheckbox.

I found similar problem in https://issues.jboss.org/browse/RF-5596. But it is closed.

somebody has solved this problem?

17:58:19,358 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
java.lang.NullPointerException
        at org.richfaces.renderkit.ListShuttleRendererBase.encodeOneRow(ListShuttleRendererBase.java:158)
        at org.richfaces.renderkit.AbstractRowsRenderer.process(AbstractRowsRenderer.java:83)
        at org.richfaces.model.ListShuttleDataModel$1.process(ListShuttleDataModel.java:84)
        at org.ajax4jsf.model.SequenceDataModel.walk(SequenceDataModel.java:101)
        at org.richfaces.model.ListShuttleDataModel.walk(ListShuttleDataModel.java:78)
        at org.ajax4jsf.component.UIDataAdaptorBase.walk(UIDataAdaptorBase.java:1156)
        at org.richfaces.renderkit.AbstractRowsRenderer.encodeRows(AbstractRowsRenderer.java:104)
        at org.richfaces.renderkit.ListShuttleRendererBase.encodeRows(ListShuttleRendererBase.java:116)
        at org.richfaces.renderkit.html.ListShuttleRenderer.doEncodeChildren(ListShuttleRenderer.java:254)
        at org.richfaces.renderkit.html.ListShuttleRenderer.doEncodeChildren(ListShuttleRenderer.java:244)
        at org.richfaces.renderkit.ListShuttleRendererBase.encodeChildren(ListShuttleRendererBase.java:245)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
        at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:277)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:166)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:83)
        at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:157)
        at org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:124)
        at org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:685)
        at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:556)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)

<h:panelGrid columns="2" columnClasses="vertTopClass">
        <rich:panel>
            <f:facet name="header">Labels</f:facet>
            <h:panelGrid columns="1">
                <h:panelGroup>
                    <h:selectBooleanCheckbox id="showAllSectionsCheckbox"
                        value="#{IDocTypeAction.tagAction.showAllForSections}">
                        <a4j:support     event="onchange"
                                        reRender="listShuttle"
                                        ajaxSingle="true"
                                        limitToList="true"
                                        requestDelay="100"/>
                    </h:selectBooleanCheckbox>
                    <h:outputLabel for="showAllSectionsCheckbox" value="Show All" />
                </h:panelGroup>
                <h:selectManyCheckbox
                    value="#{IDocTypeAction.tagAction.selectedTagsForSections}"
                    layout="pageDirection">
                    <f:selectItems value="#{IDocTypeAction.tagAction.allTags}" />
                    <a4j:support     event="onchange"
                                    reRender="listShuttle"
                                    ajaxSingle="true"
                                    limitToList="true"
                                    requestDelay="100"/>
                </h:selectManyCheckbox>
            </h:panelGrid>
        </rich:panel>
        <rich:listShuttle sourceValue="#{IDocTypeAction.filteredSections}"
            targetValue="#{IDocTypeAction.selectedSections}"
            sourceSelection="#{IDocTypeAction.selectedInSelectedSections}"
            var="section"
            listsHeight="500"
            sourceListWidth="300"
            targetListWidth="300"
            sourceCaptionLabel="Filtered Sections"
            targetCaptionLabel="Selected Sections"
            converter="org.tolven.web.amaji.idoc.types.DocSectionWrapperConverter"
            id="listShuttle"
            onclick="listShuttleSelectOnClick();"
            columnClasses="listShuttleCol1,listShuttleCol2">
            <rich:column>
                <h:outputText>#{section.title}</h:outputText>
            </rich:column>
            <rich:column>
                <h:graphicImage value="../amaji/images/chain.gif"
                    rendered="#{!empty section.sectionDependences}"
                    title="#{section.sectionDependences}" />
            </rich:column>
            <a4j:support     event="onlistchanged"
                            reRender="controlsPanel,listShuttle"
                            action="#{IDocTypeAction.checkSectionDependences}"
                            ajaxSingle="true"
                            limitToList="true"
                            requestDelay="100"/>
        </rich:listShuttle>
    </h:panelGrid>