nbconvert: Slides broken?

When I try to create a reveal slideshow i get a whole bunch of errors thrown and it doesn’t display properly. Is the slideshow functionality broken?

I’ve uploaded my test notebook to: https://anaconda.org/dhirschfeld/test_presentation/notebook

λ jupyter nbconvert --to slides test_presentation.ipynb --post serve
[NbConvertApp] Converting notebook test_presentation.ipynb to slides
[NbConvertApp] Writing 274951 bytes to test_presentation.slides.html
[NbConvertApp] Redirecting reveal.js requests to https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.1.0
Serving your slides at http://127.0.0.1:8000/test_presentation.slides.html
Use Control-C to stop this server
WARNING:tornado.access:404 GET /custom.css (127.0.0.1) 1.00ms
ERROR:tornado.application:Uncaught exception GET /reveal.js/css/reveal.css (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8000', method='GET', uri='/reveal.js/css/reveal.css', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Dnt': '1', 'Accept': 'text/css,*/*;q=0.1', 'Accept-Language': 'en-GB,en-US;q=0.8,en;q=0.6', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', 'Referer': 'http://127.0.0.1:8000/test_presentation.slides.html', 'Connection': 'keep-alive', 'Host': '127.0.0.1:8000', 'Accept-Encoding': 'gzip, deflate, sdch'})
Traceback (most recent call last):
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\web.py", line 1425, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "<string>", line 3, in raise_exc_info
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\stack_context.py", line 314, in wrapped
    ret = fn(*args, **kwargs)
  File "C:\Python\envs\py-dev\lib\site-packages\nbconvert\postprocessors\serve.py", line 31, in finish_get
    response.rethrow()
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\httpclient.py", line 587, in rethrow
    raise self.error
ConnectionRefusedError: [Errno 10061] Unknown error
ERROR:tornado.access:500 GET /reveal.js/css/reveal.css (127.0.0.1) 5272.53ms
ERROR:tornado.application:Uncaught exception GET /reveal.js/css/theme/simple.css (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8000', method='GET', uri='/reveal.js/css/theme/simple.css', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Dnt': '1', 'Accept': 'text/css,*/*;q=0.1', 'Accept-Language': 'en-GB,en-US;q=0.8,en;q=0.6', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', 'Referer': 'http://127.0.0.1:8000/test_presentation.slides.html', 'Connection': 'keep-alive', 'Host': '127.0.0.1:8000', 'Accept-Encoding': 'gzip, deflate, sdch'})
Traceback (most recent call last):
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\web.py", line 1425, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "<string>", line 3, in raise_exc_info
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\stack_context.py", line 314, in wrapped
    ret = fn(*args, **kwargs)
  File "C:\Python\envs\py-dev\lib\site-packages\nbconvert\postprocessors\serve.py", line 31, in finish_get
    response.rethrow()
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\httpclient.py", line 587, in rethrow
    raise self.error
ConnectionRefusedError: [Errno 10061] Unknown error
ERROR:tornado.access:500 GET /reveal.js/css/theme/simple.css (127.0.0.1) 5018.50ms
WARNING:tornado.access:404 GET /custom.css (127.0.0.1) 1.00ms
ERROR:tornado.application:Uncaught exception GET /reveal.js/lib/js/head.min.js (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8000', method='GET', uri='/reveal.js/lib/js/head.min.js', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Dnt': '1', 'Accept': '*/*', 'Accept-Language': 'en-GB,en-US;q=0.8,en;q=0.6', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', 'Referer': 'http://127.0.0.1:8000/test_presentation.slides.html', 'Connection': 'keep-alive', 'Host': '127.0.0.1:8000', 'Accept-Encoding': 'gzip, deflate, sdch'})
Traceback (most recent call last):
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\web.py", line 1425, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "<string>", line 3, in raise_exc_info
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\stack_context.py", line 314, in wrapped
    ret = fn(*args, **kwargs)
  File "C:\Python\envs\py-dev\lib\site-packages\nbconvert\postprocessors\serve.py", line 31, in finish_get
    response.rethrow()
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\httpclient.py", line 587, in rethrow
    raise self.error
ConnectionRefusedError: [Errno 10061] Unknown error
ERROR:tornado.access:500 GET /reveal.js/lib/js/head.min.js (127.0.0.1) 5003.50ms
ERROR:tornado.application:Uncaught exception GET /reveal.js/js/reveal.js (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8000', method='GET', uri='/reveal.js/js/reveal.js', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Dnt': '1', 'Accept': '*/*', 'Accept-Language': 'en-GB,en-US;q=0.8,en;q=0.6', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', 'Referer': 'http://127.0.0.1:8000/test_presentation.slides.html', 'Connection': 'keep-alive', 'Host': '127.0.0.1:8000', 'Accept-Encoding': 'gzip, deflate, sdch'})
Traceback (most recent call last):
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\web.py", line 1425, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "<string>", line 3, in raise_exc_info
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\stack_context.py", line 314, in wrapped
    ret = fn(*args, **kwargs)
  File "C:\Python\envs\py-dev\lib\site-packages\nbconvert\postprocessors\serve.py", line 31, in finish_get
    response.rethrow()
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\httpclient.py", line 587, in rethrow
    raise self.error
ConnectionRefusedError: [Errno 10061] Unknown error
ERROR:tornado.access:500 GET /reveal.js/js/reveal.js (127.0.0.1) 5003.50ms
WARNING:tornado.access:404 GET /favicon.ico (127.0.0.1) 1.00ms
WARNING:tornado.access:404 GET /custom.css (127.0.0.1) 1.00ms
ERROR:tornado.application:Uncaught exception GET /reveal.js/css/reveal.css (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8000', method='GET', uri='/reveal.js/css/reveal.css', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Dnt': '1', 'Accept': 'text/css,*/*;q=0.1', 'Accept-Language': 'en-GB,en-US;q=0.8,en;q=0.6', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', 'Referer': 'http://127.0.0.1:8000/test_presentation.slides.html', 'Connection': 'keep-alive', 'Host': '127.0.0.1:8000', 'Accept-Encoding': 'gzip, deflate, sdch'})
Traceback (most recent call last):
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\web.py", line 1425, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "<string>", line 3, in raise_exc_info
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\stack_context.py", line 314, in wrapped
    ret = fn(*args, **kwargs)
  File "C:\Python\envs\py-dev\lib\site-packages\nbconvert\postprocessors\serve.py", line 31, in finish_get
    response.rethrow()
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\httpclient.py", line 587, in rethrow
    raise self.error
ConnectionRefusedError: [Errno 10061] Unknown error
ERROR:tornado.access:500 GET /reveal.js/css/reveal.css (127.0.0.1) 4997.50ms
ERROR:tornado.application:Uncaught exception GET /reveal.js/css/theme/simple.css (127.0.0.1)
HTTPServerRequest(protocol='http', host='127.0.0.1:8000', method='GET', uri='/reveal.js/css/theme/simple.css', version='HTTP/1.1', remote_ip='127.0.0.1', headers={'Dnt': '1', 'Accept': 'text/css,*/*;q=0.1', 'Accept-Language': 'en-GB,en-US;q=0.8,en;q=0.6', 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36', 'Referer': 'http://127.0.0.1:8000/test_presentation.slides.html', 'Connection': 'keep-alive', 'Host': '127.0.0.1:8000', 'Accept-Encoding': 'gzip, deflate, sdch'})
Traceback (most recent call last):
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\web.py", line 1425, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "<string>", line 3, in raise_exc_info
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\stack_context.py", line 314, in wrapped
    ret = fn(*args, **kwargs)
  File "C:\Python\envs\py-dev\lib\site-packages\nbconvert\postprocessors\serve.py", line 31, in finish_get
    response.rethrow()
  File "C:\Python\envs\py-dev\lib\site-packages\tornado\httpclient.py", line 587, in rethrow
    raise self.error
ConnectionRefusedError: [Errno 10061] Unknown error
ERROR:tornado.access:500 GET /reveal.js/css/theme/simple.css (127.0.0.1) 5014.50ms
WARNING:tornado.access:404 GET /style.min.css.map (127.0.0.1) 1.00ms