running wile notes is open (notes 11) on

[Gyges-of-lydia]

Traceback (most recent call last):
File "nsf2x.py", line 75, in
File "C:\Logiciel\WinPython-64bit-3.4.4.4Qt5\python-3.4.4.amd64\lib\gettext.py", line 400, in translation
File "C:\Logiciel\WinPython-64bit-3.4.4.4Qt5\python-3.4.4.amd64\lib\gettext.py", line 372, in find
File "C:\Logiciel\WinPython-64bit-3.4.4.4Qt5\python-3.4.4.amd64\lib\gettext.py", line 114, in _expand_lang
File "C:\Logiciel\WinPython-64bit-3.4.4.4Qt5\python-3.4.4.amd64\lib\locale.py", line 390, in normalize
AttributeError: 'NoneType' object has no attribute 'lower'