Not able to convert my application file from mxml to Action Script

Question

Hi,
    In my mobile project I want to convert my application file from mxml to ActionScript.When I do this I get error and when I digged into the code I found that the error comes in preloader class initialize method as preloader property in System Manager class is null(line 2026 in SystemManager class).it actually represents the splashScreen class.When I tried to set the splash Screen the document says we cannot set this property from action script.
   I know we have an option of action script mobile project but it doesnt recognise TabbedViewNavigatorApplication.
So how can I overcome the problem.

Answer 1

I get the following error:
TypeError: Error #1007: Instantiation attempted on a non-constructor.
at mx.preloaders::Preloader/initialize()[E:\dev\4.5.1\frameworks\projects\framework\src\mx\p reloaders\Preloader.as:261]
at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::initialize()[E:\dev\4.5.1\frameworks\projects\ framework\src\mx\managers\SystemManager.as:2103]
at mx.managers::SystemManager/initHandler()[E:\dev\4.5.1\frameworks\projects\framework\src\m x\managers\SystemManager.as:2588]