Flex :: AIR App That Loads And Runs Existing AIR Swf?

I have an existing AIR app whose main content is App.swf.I would like to have another AIR app that hosts and runs App.swf. When I say run it, I mean displays it's WindowedApplication.Here's the code for the 2 AIR projects (imports are omitted for brevity):

// App AIR Project -> App.mxml -> App.swf (it's just a window)
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml">[code]....

I get the following error while App.swf is being loaded:

TypeError: Error #1009: Cannot access a property or method of a null object reference.at mx.managers::SystemManager/initHandler()[C:autobuildgalagaframeworksprojectsframeworksrcmxmanagersSystemManager.as:3001]

I believe the issue has to do with AirAppHostApplication's SystemManager conflicting with App's SystemManager because they are both living in the same app domain. Can an AIR app be written where a WindowedApplication class isn't statically defined, but loaded at runtime by loading a swf and instantiating the WindowedApplication subclass that's contained in the swf.The reason I want to do this is for an automation scenario where I have to assume I don't have the source code for the app I'm automating, but I do have access to the names of the public classes and their public methods exposed for automation. I have complete control over the environment and don't have to deal with any constraints around that, so I can put 2 AIR apps in the same directory, etc.