Исправлены поля выбора роли пользователя

pym/install/variables/system.py

@@ -365,9 +365,9 @@ class VariableClMigrateAdmin(UserHelper, Variable):
 
     def choice(self):
         return [
-            (_("None"), "none"),
-            (_("Update system"), "update_system"),
-            (_("All"), "all")
+            ("none", _("None")),
+            ("update_system", _("Update system")),
+            ("all", _("All"))
         ]
 
     def get(self):