[FLEX-28819] Sub applications, compiled with marshalling support, which load windows cause RTE exceptions when opening a basic ComboBox

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK 4.5 (Release)
• Component/s: Marshall Plan (Versioning)
• Environment: Affected OS(s): Mac; Affected OS(s): Mac OS 10.6; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 17/Oct/11 13:10
• Updated: 11/Dec/12 13:09

Description

Steps to reproduce:
1.Unzip the attachment
2. Import both projects into Flash Builder
3. Start a debug session with ParentApplication (SubApplication.swf has already been copied to the bin-debug folder)
4. Click the button to create the window.
5. Open the spark ComboBox on top, this should work as expected
6. Open the mx ComboBox on the bottom, which throws the RTE

Actual Results:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.managers.systemClasses::MarshallingSupport/getVisibleApplicationRectHandler()[E:\dev\hero_private\frameworks\projects\framework\src\mx\managers\systemClasses\MarshallingSupport.as:2256]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.managers::WindowedSystemManager/getVisibleApplicationRect()[E:\dev\hero_private\frameworks\projects\airframework\src\mx\managers\WindowedSystemManager.as:1382]
at mx.controls::ComboBox/displayDropdown()[E:\dev\hero_private\frameworks\projects\mx\src\mx\controls\ComboBox.as:1771]
at mx.controls::ComboBox/downArrowButton_buttonDownHandler()[E:\dev\hero_private\frameworks\projects\mx\src\mx\controls\ComboBox.as:2027]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\hero_private\frameworks\projects\framework\src\mx\core\UIComponent.as:13128]
at mx.controls::Button/http://www.adobe.com/2006/flex/mx/internal::buttonPressed()[E:\dev\hero_private\frameworks\projects\mx\src\mx\controls\Button.as:2483]
at mx.controls::Button/mouseDownHandler()[E:\dev\hero_private\frameworks\projects\mx\src\mx\controls\Button.as:2744]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\hero_private\frameworks\projects\framework\src\mx\core\UIComponent.as:13128]
at mx.managers::WindowedSystemManager/mouseEventHandler()[E:\dev\hero_private\frameworks\projects\airframework\src\mx\managers\WindowedSystemManager.as:2344]

Expected Results: The ComboBox would open as usual

Workaround (if any):

Remove the the compiler flag: -includes=mx.managers.systemClasses.MarshallingSupport from SubApplication, or always use the Spark components.