It is triggered when there is already new "itemList" (it extends DataView), so 
I suppose that 
PageAndComponentProvider looks for "itemList:29", which does not exists anymore.

Scenario:

- Page is loaded but lazy components 
('folders:listContainer:itemList:itemPanel:folder:children') are still loading
- User triggers folder change (itemList is replaced)
- Exception occurs

If user triggers folder change when lazy components are completely loaded (or 
during loading the last one) there is no exception at all.

Best Regards,
Michal Wegrzyn

-----Original Message-----
From: Martin Grigorov [mailto:mgrigo...@apache.org] 
Sent: Wednesday, November 02, 2011 15:54
To: users@wicket.apache.org
Subject: Re: abort loading lazy components

On Wed, Nov 2, 2011 at 4:49 PM, Michal Wegrzyn <michal.wegr...@onior.com> wrote:
> 15:32:24.028 user [http-8888-5] ERROR o.a.wicket.DefaultExceptionMapper - 
> Unexpected error occurred
> org.apache.wicket.request.handler.ComponentNotFoundException: Could not find 
> component 'folders:listContainer:itemList:29:itemPanel:folder:children' on 
> page 'class package.MyPage

Do you know how this is triggered ?

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