The following error that shows up in the logs:

tailf /var/log/openerp/openerp-server.log for name, value in self.mime_headers: File "/usr/lib/python2.7/dist-packages/babel/messages/catalog.py", line 337, in _get_mime_headers locale='en'))) File "/usr/lib/python2.7/dist-packages/babel/dates.py", line 609, in format_datetime locale = Locale.parse(locale) File "/usr/lib/python2.7/dist-packages/babel/core.py", line 313, in parse raise UnknownLocaleError(input_id) UnknownLocaleError: unknown locale 'en'

I searched google and nothing - no solution as so far has not helped

Sorry for my english