I don't think there is an Application.application.parent anymore. Either way, we've tried using FlexGlobals.parentApplication and that does not work.

Any other suggestions?

I'm not seeing getSandboxRoot() on the securityManager. We have the securityManager defined as such,

[Bindable] [SecurityManager] public var securityManager:ISecurityManager;

No dice, here's the Flash Player error we received:

TypeError: Error #1009: Cannot access a property or method of a null object reference.

                at mx.accessibility::AccImpl$/http://www.adobe.com/2006/flex/mx/internal::getDefinition()[E:\dev\hero_private\frameworks\projects\framework\src\mx\accessibil ity\AccImpl.as:250]

                at mx.accessibility::AccImpl$/http://www.adobe.com/2006/flex/mx/internal::getDefinitions()[E:\dev\hero_private\frameworks\projects\framework\src\mx\accessibil ity\AccImpl.as:315]

                at mx.accessibility::UIComponentAccProps()[E:\dev\hero_private\framework s\projects\framework\src\mx\accessibility\UIComponentAccProps.as:183]

                at mx.accessibility::UIComponentAccProps$/http://www.adobe.com/2006/flex/mx/internal::createAccessibilityImpleme ntation()[E:\dev\hero_private\frameworks\projects\framework\src\mx\accessibil ity\UIComponentAccProps.as:76]

                at mx.core::UIComponent/initializeAccessibility()[E:\dev\hero_private\fr ameworks\projects\framework\src\mx\core\UIComponent.as:7681]

                at mx.core::UIComponent/initialize()[E:\dev\hero_private\frameworks\proj ects\framework\src\mx\core\UIComponent.as:7636]

                at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\hero_private\frameworks\projects\framework\src\mx\core\UICom ponent.as:7485]

                at mx.core::UIComponent/addChildAt()[E:\dev\hero_private\frameworks\proj ects\framework\src\mx\core\UIComponent.as:7189]

                at spark.components::Group/addDisplayObjectToDisplayList()[E:\dev\hero_p rivate\frameworks\projects\spark\src\spark\components\Group.as:2037]

                at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()[E:\dev\hero_private\frameworks\projects\spark\src\spark\components\ Group.as:1628]

                at spark.components::Group/setMXMLContent()[E:\dev\hero_private\framewor ks\projects\spark\src\spark\components\Group.as:633]

                at spark.components::Group/createChildren()[E:\dev\hero_private\framewor ks\projects\spark\src\spark\components\Group.as:855]

                at mx.core::UIComponent/initialize()[E:\dev\hero_private\frameworks\proj ects\framework\src\mx\core\UIComponent.as:7624]

                at cafe.skins::PanelSkin/initialize()

                at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\hero_private\frameworks\projects\framework\src\mx\core\UICom ponent.as:7485]

                at mx.core::UIComponent/addChild()[E:\dev\hero_private\frameworks\projec ts\framework\src\mx\core\UIComponent.as:7166]

                at spark.components.supportClasses::SkinnableComponent/attachSkin()[E:\d ev\hero_private\frameworks\projects\spark\src\spark\components\support Classes\SkinnableComponent.as:692]

                at spark.components.supportClasses::SkinnableComponent/validateSkinChang e()[E:\dev\hero_private\frameworks\projects\spark\src\spark\components \supportClasses\SkinnableComponent.as:443]

                at spark.components.supportClasses::SkinnableComponent/createChildren()[ E:\dev\hero_private\frameworks\projects\spark\src\spark\components\sup portClasses\SkinnableComponent.as:406]

                at spark.components::SkinnableContainer/createChildren()[E:\dev\hero_pri vate\frameworks\projects\spark\src\spark\components\SkinnableContainer .as:879]

                at mx.core::UIComponent/initialize()[E:\dev\hero_private\frameworks\proj ects\framework\src\mx\core\UIComponent.as:7624]

                at com.southernco.view.components::EditGridColsWindow/initialize()

                at mx.managers.systemClasses::ChildManager/childAdded()[E:\dev\hero_priv ate\frameworks\projects\framework\src\mx\managers\systemClasses\ChildM anager.as:189]

                at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::rawChildren_addChildAt()[E:\dev\hero_private\frameworks\projects\framework\src\mx\managers\S ystemManager.as:2139]

                at mx.managers::SystemManager/addChildAt()[E:\dev\hero_private\framework s\projects\framework\src\mx\managers\SystemManager.as:1759]

                at mx.managers::SystemManager/addChild()[E:\dev\hero_private\frameworks\ projects\framework\src\mx\managers\SystemManager.as:1742]

                at mx.managers::PopUpManagerImpl/addPopUp()[E:\dev\hero_private\framewor ks\projects\framework\src\mx\managers\PopUpManagerImpl.as:340]

                at mx.managers::PopUpManager$/addPopUp()[E:\dev\hero_private\frameworks\ projects\framework\src\mx\managers\PopUpManager.as:193]

                at com.southernco.view::SevenGridMediator/updateColumns()[C:\Documents and Settings\x2mkotad\Adobe Flash Builder 4.5\SEPASchedules\src\com\southernco\view\SevenGridMediator.as:68]

                at org.robotlegs.base::EventMap/routeEventToListener()[/Development/Proj ects/Robotlegs/robotlegs-framework/src/org/robotlegs/base/EventMap.as: 181]

                at Function/<anonymous>()[/Development/Projects/Robotlegs/robotlegs-fram ework/src/org/robotlegs/base/EventMap.as:107]

                at flash.events::EventDispatcher/dispatchEventFunction()

                at flash.events::EventDispatcher/dispatchEvent()

                at mx.core::UIComponent/dispatchEvent()[E:\dev\hero_private\frameworks\p rojects\framework\src\mx\core\UIComponent.as:13128]

                at com.southernco.view::SevenGrid/gridSelect()[C:\Documents and Settings\x2mkotad\Adobe Flash Builder 4.5\SEPASchedules\src\com\southernco\view\SevenGrid.mxml:75]