IndexError: list index out of range
2015-11-04 15:03:41.561000 UTC
  File "/home/smokey/SmokeDetector/excepthook.py", line 46, in run_with_except_hook
    run_old(*args, **kw)

  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)

  File "/home/smokey/SmokeDetector/ChatExchange/chatexchange/browser.py", line 696, in _runner
    self.on_activity(json.loads(a))

  File "/home/smokey/SmokeDetector/ChatExchange/chatexchange/rooms.py", line 81, in on_activity

b=new Audio('http://cdn-chat.sstatic.net/chat/meta2.mp3');
e=/spam|\/smokedetector|<b>low quality|<b>offensive/i;
x=/all-caps/i;
f();
function f() {
  m=$('.message').last();
  if (!m.hasClass('c')) {
    m.addClass('c');
    t=m.find('.content').html();
    if (e.test(t)&&!x.test(t)) {
      b.play();
    }
  }
  window.setTimeout(f,500);
}