You can implement IExternalizable on the object that references the bitmapdata
On 8/18/11 11:57 AM, "method_air" <loudj...@hotmail.com> wrote: I'm creating a deep copy of an object which has a BitmapData property using ObjectUtil.copy and 'registerClassAlias', eg: registerClassAlias("flash.display.BitmapData", BitmapData); ...but I'm getting the error: ArgumentError: Error #1063: Argument count mismatch on flash.display::BitmapData(). Expected 2, got 0 Is there a workaround? Thanks, Philip -- Alex Harui Flex SDK Team Adobe System, Inc. http://blogs.adobe.com/aharui