NullPointer when refreshing a page with a table inside a zone

[ANDRE Christophe]

Hi,

I have the following zone with table inside :

<t:zone t:id="myZone" t:visible="false">
<table t:type="grid" t:source="myObjects" t:row="currentObject" t:model="model" 
t:rowIndex="indexRow">
                        <p:actionCell>
                               ...
                        </p:actionCell>
                        <p:empty>
                             <p>There is nothing</p>
                        </p:empty>
</table>
</t:zone>

And the following form :

<t:form id="myForm" t:id="myForm" t:zone=" myZone ">
                                <input t:type="textfield" t:value="myValue" 
t:id="valueInput" type="text" name="valueInput" style="display:none"/>
                                <input t:type="submit" t:id="submitValueId" 
id=" submitValueId " value="Submit" style="display:none"/>
</t:form>

After updating the zone using ajax like this:

                @Property
private BeanModel<myObject> model;

@Inject
private BeanModelSource beanModelSource;

@OnEvent(value="success", component = " myForm ")
public void processForm() throws Exception {
                               model = 
beanModelSource.createDisplayModel(myObject.class, resources.getMessages());
...
ajaxResponseRenderer.addRender("myZone ", myZone.getBody());
}


My zone get updated and the table become visible.
But I get a Null pointer if I refresh the page or when a redirection is done on 
this page:
Caused by: java.lang.NullPointerException
        at 
org.apache.tapestry5.corelib.components.GridColumns.setupRender(GridColumns.java:112)
        at 
org.apache.tapestry5.corelib.components.GridColumns.setupRender(GridColumns.java)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$SetupRenderPhase.invokeComponent(ComponentPageElementImpl.java:174)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:133)

What am I doing wrong?
(Also I have the feeling the page is not fully reloaded when the page is 
refreshed!?)

Thx


Christophe

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