Special characters in URL fail on "nikola auto"

[humitos]

I have this file in my blog (http://elblogdehumitos.com.ar/posts/subtitulos-de-cortos-de-david-oreilly/The_External_World-19723116_%5Bes%5D.srt) and when it's accessed from nikola auto command I get a 404 but when it's accessed from nikola serve there is no problem:

(blog)[18:03] humitos: nikola> nikola auto
Scanning posts...done!
[2015-08-04T22:03:38Z] INFO: auto: Watching files for changes...
[2015-08-04T22:03:39Z] INFO: ws4py: Using epoll
[2015-08-04T22:03:39Z] INFO: auto: Serving HTTP on 127.0.0.1 port 8000...
[2015-08-04T22:03:41Z] INFO: ws4py: Managing websocket [Local => 127.0.0.1:8000 | Remote => 127.0.0.1:44815]
[2015-08-04T22:03:41Z] INFO: auto: <--- {u'snipver': 1, u'ver': u'2.2.1', u'command': u'hello', u'protocols': [u'http://livereload.com/protocols/official-6', u'http://livereload.com/protocols/official-7']}
[2015-08-04T22:03:41Z] INFO: auto: ---> {"serverName": "nikola-livereload", "command": "hello", "protocols": ["http://livereload.com/protocols/official-7"]}
[2015-08-04T22:03:41Z] INFO: auto: <--- {u'url': u'http://localhost:8000/posts/subtitulos-de-cortos-de-david-oreilly/The_External_World-19723116_%5Bes%5D.srt', u'command': u'info', u'plugins': {u'less': {u'disable': False, u'version': u'1.0'}}}
[2015-08-04T22:03:41Z] INFO: auto: ****** Browser connected: http://localhost:8000/posts/subtitulos-de-cortos-de-david-oreilly/The_External_World-19723116_%5Bes%5D.srt
[2015-08-04T22:03:41Z] INFO: auto: ****** sending 0 pending messages
^C[2015-08-04T22:03:51Z] INFO: auto: Server is shutting down.
Terminado

(blog)[18:03] humitos: nikola> nikola serve
[2015-08-04T22:03:54Z] INFO: serve: Serving HTTP on 0.0.0.0 port 8000...
127.0.0.1 - - [04/Aug/2015 18:03:55] "GET /posts/subtitulos-de-cortos-de-david-oreilly/The_External_World-19723116_%5Bes%5D.srt HTTP/1.1" 200 -

The filename is: The_External_World-19723116_[es].srt