ReferenceError: Error #1056 - Has anyone come across this error?

Question

ReferenceError: Error #1056: Cannot create property text on spark.components.DataGroup.
                at mx.binding::Binding/defaultDestFunc()[E:\dev\trunk\frameworks\projects\framework\src\mx\b inding\Binding.as:270]
                at Function/http://adobe.com/AS3/2006/builtin::call()
                at mx.binding::Binding/innerExecute()[E:\dev\trunk\frameworks\projects\framework\src\mx\bind ing\Binding.as:473]
                at Function/http://adobe.com/AS3/2006/builtin::apply()
                at mx.binding::Binding/wrapFunctionCall()[E:\dev\trunk\frameworks\projects\framework\src\mx\ binding\Binding.as:385]
                at mx.binding::Binding/execute()[E:\dev\trunk\frameworks\projects\framework\src\mx\binding\B inding.as:321]
                at mx.binding::Binding/watcherFired()[E:\dev\trunk\frameworks\projects\framework\src\mx\bind ing\Binding.as:499]
                at mx.binding::Watcher/notifyListeners()[E:\dev\trunk\frameworks\projects\framework\src\mx\b inding\Watcher.as:311]
                at mx.binding::PropertyWatcher/eventHandler()[E:\dev\trunk\frameworks\projects\framework\src \mx\binding\PropertyWatcher.as:377]
                at flash.events::EventDispatcher/dispatchEventFunction()
                at flash.events::EventDispatcher/dispatchEvent()
                at mx.core::UIComponent/dispatchEvent()[E:\dev\trunk\frameworks\projects\framework\src\mx\co re\UIComponent.as:12140]
                at spark.components::DataRenderer/set data()[E:\dev\trunk\frameworks\projects\spark\src\spark\components\DataRenderer.as:122]
                at spark.components::DataGroup/updateRenderer()[E:\dev\trunk\frameworks\projects\spark\src\s park\components\DataGroup.as:819]
                at spark.components::DataGroup/setUpItemRenderer()[E:\dev\trunk\frameworks\projects\spark\sr c\spark\components\DataGroup.as:793]
                at spark.components::DataGroup/http://www.adobe.com/2006/flex/mx/internal::itemAdded()[E:\dev\trunk\frameworks\projects\s park\src\spark\components\DataGroup.as:1316]
                at spark.components::DataGroup/initializeDataProvider()[E:\dev\trunk\frameworks\projects\spa rk\src\spark\components\DataGroup.as:609]
                at spark.components::DataGroup/commitProperties()[E:\dev\trunk\frameworks\projects\spark\src \spark\components\DataGroup.as:722]
                at mx.core::UIComponent/validateProperties()[E:\dev\trunk\frameworks\projects\framework\src\ mx\core\UIComponent.as:7684]
                at mx.managers::LayoutManager/validateProperties()[E:\dev\trunk\frameworks\projects\framewor k\src\mx\managers\LayoutManager.as:572]
                at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\trunk\frameworks\projects\frame work\src\mx\managers\LayoutManager.as:730]
                at mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\trunk\frameworks\projec ts\framework\src\mx\managers\LayoutManager.as:1069]
This error is generated by the following code in the item renderer:
                  <s:Label id="owner"
                              text="{(data.member as MemberVO).name}"
                              />
I’ve examines the data provider array collection and from what I can tell, all is as expected!
I'm using Flex 4, nightly build 11921 in Windows XP environment

Answer 1

Shankar,
Thanks for the hint but I just discovered that it was the id that I assigned to the Label in s:ItemRenderer that was causing this error. I changed id value from 'owner' to 'owner1' and that took care of that error. If 'owner' is an existing property in the class hierarchy of s:ItemRenderer, shouldn't it give some "Identifier used more than once" type of error?
In any case, I'm closing this case and hopefully someone familiar with this fundamentals of this issue will throw some light on it.