Strange KeyErrors when connecting to a server != Freenode

[Siegfried Gevatter]

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/twisted/internet/tcp.py", line 362, in doRead
    return self.protocol.dataReceived(data)
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1478, in dataReceived
    basic.LineReceiver.dataReceived(self, data.replace('\r', ''))
  File "/usr/lib/python2.5/site-packages/twisted/protocols/basic.py", line 232, in dataReceived
    why = self.lineReceived(line)
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1486, in lineReceived
    self.handleCommand(command, prefix, params)
--- <exception caught here> ---
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1498, in handleCommand
    method(prefix, params)
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1002, in irc_JOIN
    self.userJoined(nick, channel)
  File "/media/sdb2/rainct/Desenvolupament/Python/p1tr/lib/core.py", line 81, in userJoined
    plugin.user_joined(self, user, channel)
  File "/media/sdb2/rainct/Desenvolupament/Python/p1tr/plugins/logger.py", line 26, in user_joined
    bot.logs[chan].write('@ %s joined channel %s' % (user, chan))
exceptions.KeyError: '#rainct'

[Siegfried Gevatter (rainct)]

Here's another one:

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/twisted/internet/tcp.py", line 362, in doRead
    return self.protocol.dataReceived(data)
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1478, in dataReceived
    basic.LineReceiver.dataReceived(self, data.replace('\r', ''))
  File "/usr/lib/python2.5/site-packages/twisted/protocols/basic.py", line 232, in dataReceived
    why = self.lineReceived(line)
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1486, in lineReceived
    self.handleCommand(command, prefix, params)
--- <exception caught here> ---
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1498, in handleCommand
    method(prefix, params)
  File "/usr/lib/python2.5/site-packages/twisted/words/protocols/irc.py", line 1021, in irc_MODE
    self.modeChanged(prefix, channel, set, modes, tuple(args))
  File "/media/sdb2/rainct/Desenvolupament/Python/p1tr/lib/core.py", line 71, in modeChanged
    plugin.mode_changed(self, user, channel, set, modes, args)
  File "/media/sdb2/rainct/Desenvolupament/Python/p1tr/plugins/logger.py", line 61, in mode_changed
    bot.logs[chan].write('@ Mode %s %s by %s' % (set + modes,
exceptions.KeyError: 'RainCT_Bot'