Problema con Alacarte

[R0GN4AR]

Non riesco ad eliminare una voce dal menu gnome

quando provo a deselezionare la voce in questione mi da:

Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/Alacarte/MainWindow.py", line 376, in on_item_tree_show_toggled
self.editor.setVisible(item, False)
File "/usr/lib/python2.4/site-packages/Alacarte/MenuEditor.py", line 204, in setVisible
self.__addUndo([self.__getMenu(item), item])
File "/usr/lib/python2.4/site-packages/Alacarte/MenuEditor.py", line 395, in __addUndo
file_path = os.path.join(util.getUserDirectoryPath(), os.path.split(item.get_desktop_file_path())[1])
File "/usr/lib/python2.4/posixpath.py", line 77, in split
i = p.rfind('/') + 1
AttributeError: 'NoneType' object has no attribute 'rfind'

invece cercando eliminarla:

Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/Alacarte/MainWindow.py", line 95, in loadUpdates
item_id = os.path.split(items[iter][3].get_desktop_file_path())[1]
File "/usr/lib/python2.4/posixpath.py", line 77, in split
i = p.rfind('/') + 1
AttributeError: 'NoneType' object has no attribute 'rfind'

Qualche consiglio?