Bloodhound 0.8-dev : Locale error

[Thu Sep 05 18:22:28 2013] [error] [client <IP>] Traceback (most recent call last):
[Thu Sep 05 18:22:28 2013] [error] [client <IP>]   File "/srv/deploy/site_staging/cgi-bin/trac.wsgi", line 31, in application
[Thu Sep 05 18:22:28 2013] [error] [client <IP>]     return dispatch_request(environ, start_request)
[Thu Sep 05 18:22:28 2013] [error] [client <IP>]   File "/srv/env/site_staging/lib/python2.7/site-packages/trac/web/main.py", line 380, in dispatch_request
[Thu Sep 05 18:22:28 2013] [error] [client <IP>]     locale.setlocale(locale.LC_ALL, environ['trac.locale'])
[Thu Sep 05 18:22:28 2013] [error] [client <IP>]   File "/usr/lib/python2.7/locale.py", line 539, in setlocale
[Thu Sep 05 18:22:28 2013] [error] [client <IP>]     return _setlocale(category, locale)
[Thu Sep 05 18:22:28 2013] [error] [client <IP>] Error: unsupported locale setting