hi, i have a 3d-land thing going, and i want to serialize all the objects in the scene with XamlWriter. the objects are added as children of a ViewPort3D. i tried serializing ViewPort3D.Children which is a Visual3DCollection but this can't be deserialized because it has no default constructor (the XamlReader barfs with a XamlParseException). so instead i tried serializing eaech of the child elements individually, like so: using (StreamWriter sw = File.CreateText(d.SafeFileName)) foreach(Visual3D v in this.mainViewport.Children) XamlWriter.Save(v, sw); and this saves it alright, but it won't deserialize because "there are multiple root elements". i tried manually adding an <xml> root element but it got very messy to deserialise. what is the correct approach? i don't really want to serialize out the entire window contents, because the code behind will change with new menus / options etc., and i will want to be able to use old xaml files from a previous version. thanks in advance tim
