crash read-me

[my.swiat]

/usr/share/read-me/read-me.html
>>> read-me
>>> "document.ready"
Traceback (most recent call last):
  File "/usr/share/read-me/read-me.py", line 792, in <module>
    readme = ReadMe('file://' + comun.HTML)
  File "/usr/share/read-me/read-me.py", line 126, in __init__
    self.inicialize()
  File "/usr/share/read-me/read-me.py", line 138, in inicialize
    p = Preferences(self)
  File "/usr/share/read-me/preferences_dialog.py", line 134, in __init__
    self.load_preferences()
  File "/usr/share/read-me/preferences_dialog.py", line 148, in load_preferences
    self.entry12.set_text(password)
  File "/usr/lib/python2.7/dist-packages/gi/types.py", line 43, in function
    return info.invoke(*args, **kwargs)
TypeError: Argument 1 does not allow None as a value

Ubuntu 12.04
read-me 0.2.2.6