This commit was manufactured by cvs2svn to create tag 'wxPy_2_6_0_0'.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/tags/wxPy_2_6_0_0@33890 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/TreeCtrl.py

@@ -146,7 +146,8 @@ class TestTreeCtrlPanel(wx.Panel):
         if item:
             self.log.WriteText("OnLeftDClick: %s\n" % self.tree.GetItemText(item))
             parent = self.tree.GetItemParent(item)
-            self.tree.SortChildren(parent)
+            if parent.IsOk():
+                self.tree.SortChildren(parent)
         event.Skip()