Traceback:
File "C:\repository\virtualenv\lib\site-packages\django\core\handlers\base.py" in get_response
  111.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\repository\virtualenv\lib\site-packages\django\views\decorators\csrf.py" in wrapped_view
  57.         return view_func(*args, **kwargs)
File "C:\repository\invoicepad\apps\customer\views.py" in customer
  36.         model = get_object_or_404(Customer, id=id, user=request.user)
File "C:\repository\virtualenv\lib\site-packages\django\shortcuts.py" in get_object_or_404
  113.         return queryset.get(*args, **kwargs)
File "C:\repository\virtualenv\lib\site-packages\django\db\models\query.py" in get
  350.         num = len(clone)
File "C:\repository\virtualenv\lib\site-packages\django\db\models\query.py" in __len__
  122.         self._fetch_all()
File "C:\repository\virtualenv\lib\site-packages\django\db\models\query.py" in _fetch_all
  966.             self._result_cache = list(self.iterator())
File "C:\repository\virtualenv\lib\site-packages\django\db\models\query.py" in iterator
  275.                     obj = model(*row_data)
File "C:\repository\virtualenv\lib\site-packages\django\db\models\base.py" in __init__
  383.                 setattr(self, field.attname, val)
File "C:\repository\invoicepad\apps\customer\fields.py" in __set__
  18. 				response = urllib.request.urlopen(value)
File "C:\Python34\Lib\urllib\request.py" in urlopen
  153.     return opener.open(url, data, timeout)
File "C:\Python34\Lib\urllib\request.py" in open
  440.             req = Request(fullurl, data)
File "C:\Python34\Lib\urllib\request.py" in __init__
  258.         self.full_url = url
File "C:\Python34\Lib\urllib\request.py" in full_url
  284.         self._parse()
File "C:\Python34\Lib\urllib\request.py" in _parse
  313.             raise ValueError("unknown url type: %r" % self.full_url)