T5.0.18 : DOM exception when refreshing a zone with an actionlink

[Tetrel Julien]

Hi.
 
I'm actually facing a problem using tapestry 5.0.18.
My code is trying to refresh a Zone component using an Actionlink, like
this: 

<t:zone t:id="ZoneProfils">    

    //some content...

    <t:actionlink t:id="deletePoste" zone="ZoneProfils">

<t:zone/>

java code:
@Component

private Zone ZoneProfils;

private Object onActionFromDeletePoste()

{

    return ZoneProfils;

}

This code works perfectly on IE7 and opera 9.64. But, in Firefox 3.5 and
google Chrome 2, this code raises an error:

in FF: "An invalid or illegal string was specified" code:"12"

in Chrome : SYNTAX_ERR : DOM Exception 12

I tried to update the zone with the content of another zone , the error
still occurs. Then I tried to update the zone with the content of a
Block component, and then no error occurs! 

The problem is that I really need to update the content of my zone. So
what can be the problem?

Thanks.

Julien Tetrel