SelectBooleanCheckbox problem

[pacman80]

Hello,

Im using Richfaces 3.1 and jsf 1.1 and i'm having problems with <h:selectBooleanCheckbox> component.

<rich:dataTable id="myTable"  value="#{myData.arrayData}" var="aData">

                              <h:column id="myColumn">

                                <f:facet name="header">

                                    <h:outputText value="Select" id="headerSelect"></h:outputText>

                                </f:facet>

                               <a4j:region>   

                                   <h:selectBooleanCheckbox

                                        id="checkboxRow" value="#{aData.select}">

                                   </h:selectBooleanCheckbox>

                               </a4j:region>

                            </h:column>

</rich:dataTable>

In a dataTable, this returns me a list of records successfully, like :

column1          column2

(checkbox)      (data)

.....

It returns me 10 records per page. When i select the last record (selecting checkbox) it throws an error :

An Error Occurred:

Exception while setting value for expression : #{aData.select} of component...

Caused by:

javax.faces.el.PropertyNotFoundException - Base is null: aData

This happens on each page's last record. No problem with other records.

And this is the stacktrace :

javax.faces.FacesException: Exception while setting value for expression : #{aData.select} of component

at javax.faces.component.UIInput.queueExceptionInRequest(UIInput.java:311)
at javax.faces.component.UIInput.updateModel(UIInput.java:292)
at javax.faces.component.UIInput.processUpdates(UIInput.java:215)
at javax.faces.component.UIComponentBase.processUpdates(UIComponentBase.java:815)
at org.ajax4jsf.component.AjaxViewRoot$2.invoke(AjaxViewRoot.java:287)

........

Googled, checked out lots of web sites, but couldnt find any solution.

Thank you.