keepnote fails to open - Githubissues

Used it well for a week and then upgraded OS to Ubuntu12.04 and keepnote 
refuses to open since then. 

What is the expected output? What do you see instead?

Get the following error message on the console. 

==============================================
KeepNote 0.7.8: Wed May 29 17:08:40 2013
enabling extension 'keepnote'
enabling extension 'backup_tar'
enabling extension 'new_file'
enabling extension 'editor_insert_date'
enabling extension 'command_basics'
enabling extension 'export_html'
enabling extension 'python_prompt'
enabling extension 'notebook_http'
/usr/lib/python2.7/dist-packages/keepnote/gui/dialog_wait.py:72: GtkWarning: 
gtk_widget_size_allocate(): attempt to allocate widget with width -19 and 
height 10
  self.dialog.run()

(keepnote:29701): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that 
doesn't believe we're it's parent.

(keepnote:29701): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that 
doesn't believe we're it's parent.

(keepnote:29701): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that 
doesn't believe we're it's parent.

(keepnote:29701): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that 
doesn't believe we're it's parent.
Traceback (most recent call last):
  File "/usr/bin/keepnote", line 437, in <module>
    main(sys.argv)
  File "/usr/bin/keepnote", line 423, in main
    start_gui(argv, options, args, cmd_exec)
  File "/usr/bin/keepnote", line 273, in start_gui
    need_gui = execute_command(app, argv)
  File "/usr/bin/keepnote", line 368, in execute_command
    win.open_notebook(path, open_here=False)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/main_window.py", line 866, in open_notebook
    self._restore_windows(notebook, open_here=open_here)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/main_window.py", line 819, in _restore_windows
    open_in_window(winid, viewerid, notebook)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/main_window.py", line 777, in open_in_window
    win.set_notebook(notebook)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/main_window.py", line 897, in set_notebook
    self.viewer.set_notebook(notebook)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/tabbed_viewer.py", line 352, in set_notebook
    viewer.set_notebook(notebook)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/three_pane_viewer.py", line 212, in set_notebook
    self.listview.set_notebook(notebook)
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/listview.py", line 122, in set_notebook
    self.setup_columns()
  File "/usr/lib/python2.7/dist-packages/keepnote/gui/listview.py", line 230, in setup_columns
    self.set_expander_column(self.get_column(0))
TypeError: Gtk.TreeView.set_expander_column() argument 1 must be 
gtk.TreeViewColumn, not None

What version of the product are you using? On what operating system?
o.7.8 on Ubuntu 12.04LTS

Please provide any additional information below.
Original issue reported on code.google.com by divya.vi...@gmail.com on 29 May 2013 at 4:10
optixlab / keepnote

keepnote fails to open #660
