Error #1009, Is this a bug? I am using latest build of TLF (418), when I tried to bind textFlows to the textFlow setter in SimpleEditorPanel(the Adobe example), the textFlows are from an ArrayCollection, the binding looks like:<local:SimpleEditorPanel id="simpleEditor" textFlow="{TextFilter.importToFlow(this.myModel.userResponse.pageContent.getItemAt(this.myModel.userResponse.currentPageNum).content, TextFilter.TEXT_LAYOUT_FORMAT)}" />Basically, I need to dynamically add pages, each page stores in a textFlow,I also added a listener to listen the damageEvent, if a textFlow's got changed, then the listener function exports the textFlow to the ArrayCollection,I've got the following error when I tried to edit a textflow:TypeError: Error #1009: Cannot access a property or method of a null object reference. at flashx.textLayout.edit::EditManager/finalizeDo()