Comment 5 for bug 1155035

if you delete the folder in ~/.config/calendar-indicator for a re-authorization the terminal shows

~$ /usr/bin/python3 /opt/extras.ubuntu.com/calendar-indicator/bin/calendar-indicator
...
...
...
Authorizate
Refresh Authorization
Refresh Authorization
Traceback (most recent call last):
  File "/opt/extras.ubuntu.com/calendar-indicator/share/calendar-indicator/preferences_dialog.py", line 206, in on_switch1_changed
    self.liststore.clear()
AttributeError: 'Preferences' object has no attribute 'liststore'
Refresh Authorization
Refresh Authorization
Refresh Authorization
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [200]>
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [200]>
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [200]>
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [200]>
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [200]>
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [200]>
{'Authorization': 'OAuth xxxsarasaxxx'}
<Response [404]>
...
...

Not allways ends with a crash
A veces termina con un cuelgue y otras simplemente no mostrando nada.
Ubuntu 13.10