Error apertium-tolk

   Error with apertium-tolk every time a non-asci character is keyed:
        org.freedesktop.DBus.Python.UnicodeEncodeError: Traceback (most recent call last):
          File "/usr/lib/python2.7/dist-packages/dbus/service.py", line 707, in _message_cb
            retval = candidate_method(self, *args, **keywords)
          File "/usr/share/apertium/dbus-1/mode.py", line 61, in translate
            return translate.translate(self.mode, options, text)
          File "/usr/share/apertium/dbus-1/mode.py", line 46, in translate
            out, err = call(add_options([self.cmd, pair], options), text)
          File "/usr/share/apertium/dbus-1/command_line.py", line 13, in call
            child_in.write(_in)
        UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 0: ordinal not in range(128)

    These are the solutions I tested:
    - i tryed to edit /usr/bin/python2.7 which is the file to which /usr/bin/python2 links .... but this file is binary
    - /usr/lib/python2.7/sitecustomize.py points to /etc/python2.7/sitecustomize.py and this file has content already so I didn't edit it:
        # install the apport exception handler if available
        try:
            import apport_python_hook
        except ImportError:
            pass
        else:
        apport_python_hook.install()

    - I created a the files /usr/lib/python2.7/site-packages/sitecustomize.py and /usr/lib/python2.5/site-packages/sitecustomize.py and ~/-local/sitecustomize.py with the following text:
        # sitecustomize.py
        # this file can be anywhere in your Python path,
        # but it usually goes in ${pythondir}/lib/site-packages/
        import sys;
        sys.setdefaultencoding('utf-8');
      None worked.