Station not found: ValueError: max() arg is an empty sequence

[dbrgn]

[danilo@yoda ~]$ fahrplan -d von zürich manegg nach nach stadelhofen
INFO:root:Detected [de] input
DEBUG:root:Using keywords: an, nach, via, von, ab
DEBUG:root:Data: {'to': 'stadelhofen', 'from': 'z\xc3\xbcrich manegg'}
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): transport.opendata.ch
DEBUG:requests.packages.urllib3.connectionpool:"GET /v1/connections?to=stadelhofen&from=z%C3%BCrich+manegg HTTP/1.1" 200 1912
DEBUG:root:Response status: 200
Traceback (most recent call last):
  File "/usr/bin/fahrplan", line 9, in <module>
    load_entry_point('fahrplan==0.1b3', 'console_scripts', 'fahrplan')()
  File "/usr/lib/python2.7/site-packages/fahrplan/main.py", line 131, in main
    key=len))
ValueError: max() arg is an empty sequence