[dsb66]

I have upgraded from 0.4.100, but on start under debug mode i get the following:

C:\>calibre-debug -c "from calibre.gui2.main import main; main()"
link hasn't been detected!
link hasn't been detected!
Traceback (most recent call last):
File "debug.py", line 96, in <module>
File "debug.py", line 80, in main
File "<string>", line 1, in <module>
File "C:\Program Files\calibre\library.zip\calibre\gui2\main.py", line 1494, in main
File "C:\Program Files\calibre\library.zip\calibre\gui2\main.py", line 149, in __init__
KeyError: u'\u0432\u0435\u0440\u0441\u0438\u044f'

Thanks!