AttributeError: 'unicode' object has no attribute 'self'

[anonymous]

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 313, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 184, in dispatch
    req.perm = PermissionCache(self.env, req.authname)
  File "/usr/lib/python2.4/site-packages/trac/perm.py", line 267, in __init__
    self.perms = PermissionSystem(env).get_user_permissions(username)
  File "/usr/lib/python2.4/site-packages/trac/perm.py", line 231, in get_user_permissions
    for perm in self.store.get_user_permissions(username):
  File "/usr/lib/python2.4/site-packages/trac/perm.py", line 106, in get_user_permissions
    subjects += list(provider.get_permission_groups(username))
  File "build/bdist.linux-x86_64/egg/dbauth/perm.py", line 46, in get_permission_groups
AttributeError: 'unicode' object has no attribute 'self'

Ubuntu 6.06 AMD64 Python 2.4 SQLite 3

[Alec Thomas]

Formatted exception usefully.