What does your delete method look like? Try adding some IF statements to check for null or undefined values before you run the delete. If it's null or undefined, do a return.
--- In flexcoders@yahoogroups.com, Adrian Williams <[EMAIL PROTECTED]> wrote: > > All, > > I could really use some help in identifying where even to begin > looking to figure out what's causing this problem. > > I have a ADG that is displaying a GroupingCollection. > > I have an application control bar that has a "trash" image. A user > can drag a node from the ADG and drop it in the trash to delete the node > and all it's children. > > When you initially get into the application and drag the first node > of the tree to the trash, the delete fires correctly and without error. > > When you try to drag the (now) first node of the tree into the > trash, I get the following error: > > TypeError: Error #1010: A term is undefined and has no properties. > at > mx.controls::AdvancedDataGridBaseEx/displayToAbsoluteColumnIndex()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\AdvancedDataGridBaseEx.as:7166] > at > mx.controls::AdvancedDataGridBaseEx/commitEditedItemPosition()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\AdvancedDataGridBaseEx.as:4426] > at > mx.controls::AdvancedDataGridBaseEx/updateDisplayList()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\AdvancedDataGridBaseEx.as:1807] > at > mx.controls::AdvancedDataGrid/updateDisplayList()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\AdvancedDataGrid.as:5924] > at > mx.controls.listClasses::AdvancedListBase/validateDisplayList()[C:\Work\flex\dmv_automation\projects\datavisualisation\src\mx\controls\listClasses\AdvancedListBase.as:3071] > 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] > > This only errors when manipulating the second time you try to delete > the first node. You can delete any of the other nodes, repeatedly, > without error. I suspect there is some kind of out of index problem > happening but the dump gives me no ideas on where to look. > > Anyone?! > > Thanks, > Adrian >
