AttributeError: NullTranslationsBabel instance has no attribute 'isactive'

[bdan12@…]

How to Reproduce

While doing a GET operation on /admin, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'cat_id': None, 'panel_id': None, 'path_info': None}

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0

System Information

Trac	1.0.1
Trac	1.0.1
Babel	1.3
Docutils	0.11
Genshi	0.7 (with speedups)
GIT	1.9.1
mod_python	3.3.1
MySQL	server: "5.5.40-0ubuntu0.14.04.1", client: "5.5.40", thread-safe: 1
MySQLdb	1.2.3
Pygments	1.6
Python	2.7.6 (default, Mar 22 2014, 23:03:14) [GCC 4.8.2]
Python	2.7.6 (default, Mar 22 2014, 23:03:14) [GCC 4.8.2]
pytz	2012c
pytz	2012c
setuptools	3.3
setuptools	3.3
jQuery	1.7.2

Enabled Plugins

SimpleMultiProject	0.0.4dev
TracAccountManager	0.4.4
TracAnnouncer	1.0dev
TracDiscussion	0.9dev

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 497, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 214, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.7/dist-packages/trac/admin/web_ui.py", line 89, in process_request
    panels, providers = self._get_panels(req)
  File "/usr/lib/python2.7/dist-packages/trac/admin/web_ui.py", line 169, in _get_panels
    p = list(provider.get_admin_panels(req) or [])
  File "build/bdist.linux-i686/egg/acct_mgr/admin.py", line 196, in get_admin_panels
    yield ('accounts', _("Accounts"), 'config', _("Configuration"))
  File "/usr/lib/python2.7/dist-packages/trac/util/translation.py", line 290, in <lambda>
    return lambda *args, **kw: _functions[symbol](domain, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/trac/util/translation.py", line 202, in dgettext
    if not self.isactive:
  File "/usr/lib/python2.7/dist-packages/trac/util/translation.py", line 190, in __getattr__
    return getattr(self.active, name)
AttributeError: NullTranslationsBabel instance has no attribute 'isactive'

[Ryan J Ollos]

This is a Trac issue that is fixed in ​milestone:1.0.2. Please upgrade.