gaaah!

I can't open the configuration window!!!
Spoiler:
calibre, version 1.12.0
HIBA: Ismeretlen hiba történt: <b>KeyError</b>:u'Default'
calibre 1.12 isfrozen: True is64bit: False
Linux-3.11.0-13-generic-i686-with-debian-wheezy-sid Linux ('32bit', 'ELF')
('Linux', '3.11.0-13-generic', '#20-Ubuntu SMP Wed Oct 23 17:26:33 UTC 2013')
Python 2.7.5
Linux: ('debian', 'wheezy/sid', '')
Traceback (most recent call last):
File "site-packages/calibre/customize/__init__.py", line 150, in do_user_config
File "calibre_plugins.fanfictiondownloader_plugin.__ini t__", line 83, in config_widget
File "calibre_plugins.fanfictiondownloader_plugin.confi g", line 179, in __init__
File "calibre_plugins.fanfictiondownloader_plugin.confi g", line 728, in __init__
KeyError: u'Default'