Gwibber does not start, throwing KeyError

[alex kalderimis]

Gwibber fails to start. This happened after deleting an account (accidentally - I'd very much like to reinstate it!). Here is the output of gwibber -d:

gwibber -d
DEBUG:root:Launched from /usr/bin
DEBUG:root:Assuming path is correct
WARNING:root:desktopcouch is not available. . falling back to gconf

** (gwibber:5697): WARNING **: Trying to register gtype 'WnckWindowState' as flags when in fact it is of type 'GEnum'

** (gwibber:5697): WARNING **: Trying to register gtype 'WnckWindowActions' as flags when in fact it is of type 'GEnum'

** (gwibber:5697): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask' as flags when in fact it is of type 'GEnum'
Traceback (most recent call last):
  File "/usr/bin/gwibber", line 57, in <module>
    client.Client()
  File "/usr/lib/python2.6/dist-packages/gwibber/client.py", line 107, in __init__
    self.w = GwibberClient()
  File "/usr/lib/python2.6/dist-packages/gwibber/client.py", line 208, in __init__
    self.refresh()
  File "/usr/lib/python2.6/dist-packages/gwibber/client.py", line 762, in refresh
    self.microblog.perform_scheduled_operations()
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Python.KeyError: Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python2.6/dist-packages/gwibber/server.py", line 302, in perform_scheduled_operations
    self.opmanager.perform_scheduled_operations()
  File "/usr/lib/python2.6/dist-packages/gwibber/microblog/__init__.py", line 243, in perform_scheduled_operations
    self.perform_scheduled_operation(o)
  File "/usr/lib/python2.6/dist-packages/gwibber/microblog/__init__.py", line 246, in perform_scheduled_operation
    if o.operation.check(o.account):
  File "/usr/lib/python2.6/dist-packages/gwibber/microblog/op.py", line 17, in check
    return (self.__name__ in features(account) and \
  File "/usr/lib/python2.6/dist-packages/gwibber/microblog/__init__.py", line 51, in features
    return PROTOCOLS[account["protocol"]].PROTOCOL_INFO["features"]
KeyError: None