The navigator now displays the plots and data in a tree that shows the ancestry information.

system/logger.py

@@ -58,7 +58,10 @@ class LogView(gtk.TreeView):
         #self.connect('button_release_event', None)
 
         # Make sure tree view displays bottom entry when entered
-        self.model.connect('row-changed', lambda model, path, iter : self.scroll_to_cell(path))
+        def scroll_to_last(model, path, it):
+            if path:
+                self.scroll_to_cell(path)
+        self.model.connect('row-changed', scroll_to_last)
 
     def set_level(self, level):
         self.level = level