=== modified file 'share/extensions/inkex.py'
--- share/extensions/inkex.py	2016-05-26 09:28:23 +0000
+++ share/extensions/inkex.py	2017-02-19 20:17:12 +0000
@@ -54,6 +54,9 @@
     if sys.platform.startswith('win'):
         import locale
         current_locale, encoding = locale.getdefaultlocale()
+        if current_locale is None:
+            # FIXME: what might cause current_locale to be None?
+            current_locale = "C"
         os.environ['LANG'] = current_locale
         try:
             localdir = os.environ['INKSCAPE_LOCALEDIR']