#1009 on creationComplete when resizing browser during loading modules

Question

I use Flex 3.5 on Mac with Safari. Same Problem with Firefox.
When I start my application that loads 8 Modules after login and I resize the browser window I get #1009. My views are in ViewStack that has creationPolicy "auto". Normally first time a view and it's childs get loaded is on the first itemClick in viewstack but if I resize browser window, creationComplete method of all views get called and the childs (like dataGrids or others) are null.
Why? and what can I do against this behaviour?
Thanks

Answer 1

No the Error is thrown in my onCreationComplete event handler when I try to use a DataGrid but it's null.
this view is in a module
the modules main view has a viewstack with creationPolicy none
"pages" that are childs of viewStack get created after an event get fired to a PageFlowManager
pages are creationPolicy all in general
this manager calls "pageContainer.createComponentsFromDescriptors(false);" at the beginning
in main application that calls shell I added months ago this
private function onApplicationComplete(event:FlexEvent):void {
    stage.addEventListener(Event.RESIZE, onStageResize);
private function onStageResize(e:Event):void {
    validateNow(); 
I found this text somewhere:
The documents are not very clear on this (if not misleading), but what you have to do
is set creationPolicy to none on the canvas, and leave it off of it's children (default to all).
Doing so will create all of the children with recurse=true, or just it's immediate
children with recurse=false. You would have to call the function manually on any children
with creationPolicy set to none. So we choose false.
Now I tried to set  "pageContainer.createComponentsFromDescriptors(true);" and somehow the error disappeared. Any ideas if that combination caused the creationComplete event if I resized the window on startup? And if yes why?
Message was edited by: thanks Flex harUI to give me a post after this long time