Gramps in Ubuntu 14.04 error

4504: ERROR: grampsgui.py: line 384:
Gramps no pudo arrancar. Por favor, reporte este error.
Puede deberse a un error en una vista (de terceros) en el arranque.
Para usar otra vista, no cargue un árbol genealógico, cambie la vista primero y cargue después su árbol genealógico.
También puede cambiar a mano la vista inicial en el archivo gramps.ini
cambiando el parámetro lasst-view.
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gramps/gui/grampsgui.py", line 353, in __startgramps
    Gramps(argparser)
  File "/usr/lib/python2.7/dist-packages/gramps/gui/grampsgui.py", line 252, in __init__
    from . import viewmanager
  File "/usr/lib/python2.7/dist-packages/gramps/gui/viewmanager.py", line 75, in <module>
    from .plug import tool
  File "/usr/lib/python2.7/dist-packages/gramps/gui/plug/__init__.py", line 33, in <module>
    from ._guioptions import make_gui_option, add_gui_options
  File "/usr/lib/python2.7/dist-packages/gramps/gui/plug/_guioptions.py", line 60, in <module>
    from .. import widgets
  File "/usr/lib/python2.7/dist-packages/gramps/gui/widgets/__init__.py", line 28, in <module>
    from .dateentry import *
  File "/usr/lib/python2.7/dist-packages/gramps/gui/widgets/dateentry.py", line 45, in <module>
    from .monitoredwidgets import MonitoredDate
  File "/usr/lib/python2.7/dist-packages/gramps/gui/widgets/monitoredwidgets.py", line 57, in <module>
    from gramps.gen.datehandler import displayer, parser
  File "/usr/lib/python2.7/dist-packages/gramps/gen/datehandler/__init__.py", line 37, in <module>
    from ._datehandler import (LANG, LANG_SHORT, LANG_TO_PARSER, LANG_TO_DISPLAY,
  File "/usr/lib/python2.7/dist-packages/gramps/gen/datehandler/_datehandler.py", line 48, in <module>
    from ._dateparser import DateParser
  File "/usr/lib/python2.7/dist-packages/gramps/gen/datehandler/_dateparser.py", line 53, in <module>
    from . import _grampslocale
  File "/usr/lib/python2.7/dist-packages/gramps/gen/datehandler/_grampslocale.py", line 155, in <module>
    to_uni(time.strftime('%B',(1,6,1,1,1,1,1,1,1)), codeset).lower() : 6,
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 2: ordinal not in range(128)