Error to download

[kyumiouchi]

When I try to this:
chakin.download(number=2, save_dir='./')
or
chakin.download(number=21, save_dir='./')

It is not working.

---

ValueError Traceback (most recent call last)
in ()
----> 1 chakin.download(number=2, save_dir='./')

/hd/anaconda2/envs/gpu2/lib/python2.7/site-packages/chakin/downloader.pyc in download(number, save_dir)
39 os.makedirs(save_dir)
40 save_path = os.path.join(save_dir, file_name)
---> 41 path, _ = urlretrieve(url, save_path, reporthook=dlProgress)
42 pbar.finish()
43 return path

/hd/anaconda2/envs/gpu2/lib/python2.7/urllib.pyc in urlretrieve(url, filename, reporthook, data, context)
96 else:
97 opener = _urlopener
---> 98 return opener.retrieve(url, filename, reporthook, data)
99 def urlcleanup():
100 if _urlopener:

/hd/anaconda2/envs/gpu2/lib/python2.7/urllib.pyc in retrieve(self, url, filename, reporthook, data)
269 size = int(headers["Content-Length"])
270 if reporthook:
--> 271 reporthook(blocknum, bs, size)
272 while 1:
273 block = fp.read(bs)

/hd/anaconda2/envs/gpu2/lib/python2.7/site-packages/chakin/downloader.pyc in dlProgress(count, blockSize, totalSize)
31 if pbar.max_value is None:
32 pbar.max_value = totalSize
---> 33 pbar.start()
34
35 pbar.update(min(count * blockSize, totalSize))

/hd/anaconda2/envs/gpu2/lib/python2.7/site-packages/progressbar/bar.pyc in start(self, max_value, init)
655
656 if self.max_value is not base.UnknownLength and self.max_value < 0:
--> 657 raise ValueError('Value out of range')
658
659 self.start_time = self.last_update_time = datetime.now()

ValueError: Value out of range