isimage doesn't fail if image directory partially exists

        arrow("Creating base directories", 1, verbose)

        try:

            for d in (path, parser_path, setup_path, data_path):

                if not os.path.exists(d) or not os.path.isdir(d):

                    os.mkdir(d)

        except Exception as e:

            raise Exception("Unable to create directory: %s: %s" % (d, e))