I'm getting the following stack trace when changing the layout of some
charts:
TypeError: Error #1009: Cannot access a property or method of a null
object reference.
at mx.charts.chartClasses::ChartLabel/updateDisplayList()[C:\Work\flex
\dmv_automation\projects\datavisualisation\src\mx\charts\chartClasses
\ChartLabel.as:262]
at mx.core::UIComponent/validateDisplayList()[E:\dev\3.0.x\frameworks
\projects\framework\src\mx\core\UIComponent.as:6214]
at mx.managers::LayoutManager/validateDisplayList()[E:\dev\3.0.x
\frameworks\projects\framework\src\mx\managers\LayoutManager.as:602]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\3.0.x
\frameworks\projects\framework\src\mx\managers\LayoutManager.as:675]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[E:\dev\3.0.x\frameworks
\projects\framework\src\mx\core\UIComponent.as:8460]
at mx.core::UIComponent/callLaterDispatcher()[E:\dev\3.0.x\frameworks
\projects\framework\src\mx\core\UIComponent.as:8403]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()
Line 262 in ChartLabel.as is the following:
if(parent.rotation == 90 && parent is AxisRenderer)
which, combined with the error, seems to imply that this ChartLabel has
no parent (!), and I've confirmed this in the debugger. I searched
through my code and I'm not creating any ChartLabels directly. Any ideas
why this could be happening (I can't nail down a simple set of steps to
this)? Any thoughts for workarounds?
Thanks,
Maciek
