Open in new window - AssertionError: Can not get a file for the toplevel namespace

[Enkouyami]

If you make a new notebook and right click on the index side pane while nothing is selected and click "Open in new window", you will get an AssertionError: Can not get a file for the toplevel namespace.

This is zim 0.59
Python version is sys.version_info(major=2, minor=7, micro=4, releaselevel='final', serial=0)
Gtk version is (2, 24, 17)
Pygtk version is (2, 24, 0)
Platform is posix
Zim revision is:
  branch: pyzim-trunk
  revision: 636 <email address hidden>
  date: 2013-01-23 22:07:40 +0100

======= Traceback =======
  File "/usr/lib/python2.7/dist-packages/zim/gui/__init__.py", line 799, in _action_handler
    method(*arg)
  File "/usr/lib/python2.7/dist-packages/zim/gui/__init__.py", line 1462, in open_new_window
    PageWindow(self, page).show_all()
  File "/usr/lib/python2.7/dist-packages/zim/gui/__init__.py", line 2942, in __init__
    page = ui.notebook.get_page(page)
  File "/usr/lib/python2.7/dist-packages/zim/notebook.py", line 1263, in get_page
    page = store.get_page(path)
  File "/usr/lib/python2.7/dist-packages/zim/stores/files.py", line 73, in get_page
    file = self._get_file(path)
  File "/usr/lib/python2.7/dist-packages/zim/stores/files.py", line 55, in _get_file
    assert path != self.namespace, 'Can not get a file for the toplevel namespace'
AssertionError: Can not get a file for the toplevel namespace

[Jaap Karssenberg (jaap.karssenberg)]

Fix menu outside list area