IndexError: tuple index out of range

[trac@…]

Announcer plugin fails to send message. Stack trace:

2015-10-14 11:37:23,957 Trac[api] ERROR: AnnouncementSystem failed.
Traceback (most recent call last):
  File "E:\Python27\lib\site-packages\tracannouncer-1.0dev_r0-py2.7.egg\announcer\api.py", line 560, in _real_send
    subscriptions = self.resolver.subscriptions(evt)
  File "E:\Python27\lib\site-packages\tracannouncer-1.0dev_r0-py2.7.egg\announcer\api.py", line 299, in subscriptions
    [x for x in sp.matches(event) if x]
  File "E:\Python27\lib\site-packages\tracannouncer-1.0dev_r0-py2.7.egg\announcer\opt\subscribers.py", line 419, in matches
    s[3], s[4])

• tracannouncer 1.0dev-r0
• Python 2.7

Possible fix: change the tracannouncer-1.0dev_r0-py2.7.egg\announcer\opt\subscribers.py, line 419 to:

    s[2], s[3])