IndexError: list index out of range with TimelineCheckinFilter.py

[marten.nelson@…]

After installing TimelineCheckinFilter.py I often get the error below when creating/updating tickes. The changes are saved and when I refresh the page, it displays correctly.

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/web/api.py", line 367, in send_error
    'text/html')
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/web/chrome.py", line 708, in render_template
    data = self.populate_data(req, data)
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/web/chrome.py", line 618, in populate_data
    d['chrome'].update(req.chrome)
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/web/api.py", line 194, in __getattr__
    value = self.callbacks[name](self)
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/web/chrome.py", line 475, in prepare_request
    for contributor in self.navigation_contributors:
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/core.py", line 67, in extensions
    return filter(None, [component.compmgr[cls] for cls in extensions])
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/core.py", line 204, in __getitem__
    component = cls(self)
  File "/usr/lib/python2.5/site-packages/Trac-0.11.4-py2.5.egg/trac/core.py", line 108, in maybe_init
    init(self)
  File "/data/trac/edtuit/plugins/TimelineCheckinFilter.py", line 81, in __init__
    path = path[1]
IndexError: list index out of range