 			_geometries		= {};
 			_textures		= {};
 			_materials		= {};
+			_symbols		= {};
 			
 			_layers			= new Vector.<String>(32, true);
 			_layers[0]		= 'Default';

		public function get geometryAdded() : Signal
		{
			return _geometryAdded;
		}
		
		public function setGeometry(name : String, geometry : Geometry) : void

			initializeSignals();
		}
		
		public function get numSymbols() : uint
		{
			return _numSymbols;
		}
		
		public function get numTextures() : uint
		{
			return _numTextures;
