[FLEX-28446] TypeError: Error #1009: Cannot access a property or method of a null object reference. at mx.core::UIComponent/getStyle........

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Modules
• Environment: Affected OS(s): All OS Platforms; Browser: Firefox 3.x; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 01/Apr/10 04:07
• Updated: 25/Oct/11 14:29
• Resolved: 22/Sep/11 12:48

Description

EXTRA info. Found in version = 4.0 Adobe Flash builder 4.0 Premium build: 272416

Steps to reproduce:
1. load project (in zipfile)
2. run the application
3. push button "load module"

Actual Results:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.core::UIComponent/getStyle()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UIComponent.as:10372]
at mx.core::UIComponent/getConstraintValue()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8612]
at mx.containers.utilityClasses::CanvasLayout/getLayoutConstraints()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\containers\utilityClasses\CanvasLayout.as:1621]
at mx.containers.utilityClasses::CanvasLayout/parseConstraints()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\containers\utilityClasses\CanvasLayout.as:894]
at mx.containers.utilityClasses::CanvasLayout/applyAnchorStylesDuringUpdateDisplayList()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\containers\utilityClasses\CanvasLayout.as:448]
at mx.containers.utilityClasses::CanvasLayout/updateDisplayList()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\containers\utilityClasses\CanvasLayout.as:285]
at mx.core::LayoutContainer/updateDisplayList()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\LayoutContainer.as:443]
at mx.core::UIComponent/validateDisplayList()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8531]
at mx.core::Container/validateDisplayList()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\Container.as:3275]
at mx.managers::LayoutManager/validateDisplayList()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:663]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:718]
at mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:1072]

Expected Results:
a visible button

Workaround (if any):

regress to adobe flash builder plugin beta 2. No code work around known to me.