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https://issues.apache.org/jira/browse/FLEX-33382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Justin Mclean resolved FLEX-33382.
----------------------------------
Resolution: Fixed
Fix Version/s: Apache Flex 4.10.0
Check if tween is null before called method. SVN revision check in 142453.
> Run Time Error 1009 in mx:Combobox in destoryDropdown
> -----------------------------------------------------
>
> Key: FLEX-33382
> URL: https://issues.apache.org/jira/browse/FLEX-33382
> Project: Apache Flex
> Issue Type: Bug
> Components: mx: ComboBox
> Affects Versions: Adobe Flex SDK 4.6 (Release)
> Reporter: Justin Mclean
> Assignee: Justin Mclean
> Priority: Minor
> Fix For: Apache Flex 4.10.0
>
>
> Run Time Error 1009 in destroyDropdown(), occurs infrequently and not easy to
> reproduce.
> Sample stack trace (from 11.5 release player).
> TypeError: Error #1009
> at mx.controls::ComboBox/destroyDropdown()
> at mx.controls::ComboBox/removedFromStageHandler()
> at
> mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::$removeChild()
> at mx.core::UIComponent/removeChild()
> at mx.core::UIComponent/addChild()
> at mx.controls::AdvancedDataGrid/addRendererToContentArea()
> at mx.controls::AdvancedDataGrid/createHeaderItems()
> at mx.controls::AdvancedDataGrid/createHeaders()
> at
> mx.controls.advancedDataGridClasses::AdvancedDataGridBase/makeRowsAndColumns()
> at mx.controls::AdvancedDataGridBaseEx/makeRowsAndColumns()
> at mx.controls::AdvancedDataGrid/makeRowsAndColumns()
> at
> mx.controls.listClasses::AdvancedListBase/makeRowsAndColumnsWithExtraRows()
> at mx.controls.listClasses::AdvancedListBase/updateDisplayList()
> at mx.controls::AdvancedDataGridBaseEx/updateDisplayList()
> at mx.controls::AdvancedDataGrid/updateDisplayList()
> at mx.controls.listClasses::AdvancedListBase/validateDisplayList()
> at mx.managers::LayoutManager/validateDisplayList()
> at mx.managers::LayoutManager/doPhasedInstantiation()
> at mx.managers::LayoutManager/validateNow()
> at mx.controls::ComboBox/displayDropdown()
> at mx.controls::ComboBox/downArrowButton_buttonDownHandler()
> at flash.events::EventDispatcher/dispatchEvent()
> at mx.core::UIComponent/dispatchEvent()
> at
> mx.controls::Button/http://www.adobe.com/2006/flex/mx/internal::buttonPressed()
> at mx.controls::Button/mouseDownHandler()
> at flash.events::EventDispatcher/dispatchEvent()
> at mx.core::UIComponent/dispatchEvent()
> at mx.managers::SystemManager/mouseEventHandler()
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