Getting error while maintaining flash code

Question

I am new to flashbuilder. I have got this existing code to maintain. All of the mxml files have outermost tag s:WindowedApplication. The navigation from one page to another is done using code as follows:

public function help_clickHandler(event:MouseEvent):void
{
    var dTracker:aboutProduct = new aboutProduct();
    this.addElement(dTracker);
}

After navigating to a new page I get following error on clicking any where on newly loaded page:

ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
  at flash.display::DisplayObjectContainer/getChildIndex()
  at mx.managers::SystemManager/getChildIndex()  [E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:1823]
  at mx.managers.systemClasses::ActiveWindowManager/mouseDownHandler()  [E:\dev\4.y\frameworks\projects\framework\src\mx\managers\systemClasses\ActiveWindowManager.as:483]
  at flash.events::EventDispatcher/dispatchEventFunction()
  at flash.events::EventDispatcher/dispatchEvent()
  at mx.core::UIComponent/dispatchEvent()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:13152]
  at mx.managers::SystemManager/mouseEventHandler()  [E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:2918]


Error: Error #3003: File or directory does not exist.
    at flash.filesystem::File/copyTo()
    at studyTopics/studytopic_changeHandler()[C:\flash\46\HondaLMS\src\studyTopics.mxml:81]
    at studyTopics/__lst_change()[C:\flash\46\HondaLMS\src\studyTopics.mxml:136]
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at mx.core::UIComponent/dispatchEvent()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:13152]
    at spark.components::List/commitSelection()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\List.as:1278]
    at spark.components::List/commitProperties()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\List.as:1148]
    at mx.core::UIComponent/validateProperties()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:8219]
    at spark.components::List/item_mouseDownHandler()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\List.as:1915]
    at flash.events::EventDispatcher/dispatchEventFunction()
    at flash.events::EventDispatcher/dispatchEvent()
    at mx.core::UIComponent/dispatchEvent()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:13152]
    at mx.managers::SystemManager/mouseEventHandler()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:2918]

Please help me solve this runtime error.

Update:

There is a technical error in the design of application, i.e., all of the mxml have WindowApplication. There should be only one WindowApplication and rest of them should be Application type (reference). Still I have to figure out, how to navigate from one page to another page and return back to main page or previous page.

Check the flex sdk version that you're using now and used while developing the existing code. Are those same? — Yasuyuki Uno
The application was developed using flashbuilder 4.5 but I am having flashbuilder 4.7. It is a pre-existing issue. — Anusha
The difference between flashbuilder 4.5 and 4.7 is no problem. It's just an IDE. Flash Builder 4.7 uses Flex 4.6 SDK by default. And I guess the existing project uses 4.5 SDK or more older SDK. So, you should download 4.5 SDK and use it. It can download here. sourceforge.net/adobe/flexsdk/wiki/Download%20Flex%204.5 — Yasuyuki Uno
There is older setup with 4.5 version in another desktop. But same error there. — Anusha
hmm... seems from the 2nd error "#3003 File or directory does not exist", the project depends on some file or directory, doesn't it? — Yasuyuki Uno

Anusha Anusha · Accepted Answer · 2015-09-07T00:51:44

In one flex application there can be only one mxml with WindowApplication container. Rest of the containers should be Group.

I left landing page as WindowApplication and changed rest in Group, this revolved the issue I was facing.

Getting error while maintaining flash code

1 Answers