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 ?