--- turtleDemo_original.py Wed Jun 04 08:29:55 2008
+++ turtleDemo.py Wed Sep 24 14:25:41 2008
@@ -98,6 +98,7 @@
         turtle.Screen._canvas = turtle.ScrolledCanvas(g_frame, 800, 600, 1000, 800)
         #xturtle.Screen._canvas.pack(expand=1, fill="both")
         self.screen = _s_ = turtle.Screen()
+        turtle.TurtleScreen.__init__(_s_, _s_._canvas)
         self.scanvas = _s_._canvas
         #xturtle.RawTurtle.canvases = [self.scanvas]
         turtle.RawTurtle.screens = [_s_]