private void CreateDummyRootNode()
{
ChunkNode rootNode = new ChunkNode_823();
rootNode.Name = FileName;
rootNode.ObjectNodeID = 1; // No node IDs in #ivo files
rootNode.ParentNodeID = ~0; // No parent
rootNode.__NumChildren = 0; // Single object
rootNode.MatID = 0;
rootNode.Transform = Matrix44.CreateDefaultRootNodeMatrix();
rootNode.ChunkType = ChunkTypeEnum.Node;
RootNode = rootNode;
}