Grammalecte - libreoffice

Hi,

Can someone give me a clue to install the grammalecte extension on libreoffice ?

CLD installed yesterday with a -current ISO and updated.
Libreoffice is the binary installed by default.
Grammalecte is a tool to check errors like grammar, typo, … etc.
http://www.dicollecte.org/grammalecte

Here is the grammalecte error logs :

<type 'exceptions.SyntaxError'>: Non-ASCII character '\xe2' in file /home/fred/.config/libreoffice/4/user/uno_packages/cache/uno_packages/lu280859rai2k.tmp_/Grammalecte-fr-v0.5.15.oxt/pythonpath/grammalecte/fr/gc_engine.py on line 32, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details (gc_engine.py, line 32), traceback follows
  /usr/lib64/libreoffice/program/uno.py:269 in function _uno_import() [return _g_delegatee( name, *optargs, **kwargs )]
  /home/fred/.config/libreoffice/4/user/uno_packages/cache/uno_packages/lu280859rai2k.tmp_/Grammalecte-fr-v0.5.15.oxt/pythonpath/grammalecte/fr/__init__.py:2 in function <module>() [from .gc_engine import *]
  /usr/lib64/libreoffice/program/uno.py:269 in function _uno_import() [return _g_delegatee( name, *optargs, **kwargs )]
  /home/fred/.config/libreoffice/4/user/uno_packages/cache/uno_packages/lu280859rai2k.tmp_/Grammalecte-fr-v0.5.15.oxt/Grammalecte.py:17 in function <module>() [import grammalecte.fr as gce]
  /usr/lib64/libreoffice/program/pythonloader.py:103 in function getModuleFromUrl() [exec(codeobject, mod.__dict__)]
  /usr/lib64/libreoffice/program/pythonloader.py:149 in function writeRegistryInfo() [mod = self.getModuleFromUrl( locationUrl )]

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