I get the error below when trying to run kagu. The kagu scanner works fine but kagu crashes.

./kagu.py:23: RuntimeWarning: import cdrom: No module named cdrom
import os, pygame, time, sys, gc
./kagu.py:23: RuntimeWarning: import joystick: No module named joystick
import os, pygame, time, sys, gc
sent
album query took:0.115386009216
invalid album cache for UNKNOWN
Traceback (most recent call last):
File "./kagu.py", line 117, in <module>
if __name__ == '__main__': main()
File "./kagu.py", line 75, in main
manager.start(screen)
File "/usr/lib/kagu/manager.py", line 108, in start
self.album_view = views.AlbumView()
File "/usr/lib/kagu/views.py", line 75, in __init__
self.__load_album_widget()
File "/usr/lib/kagu/views.py", line 97, in __load_album_widget
for album in self.__get_album_sprites():
File "/usr/lib/kagu/views.py", line 115, in __get_album_sprites
list2.append(widgets.AlbumArtist(row['album'],row['artist']))
File "/usr/lib/kagu/widgets.py", line 520, in __init__
width = self.album.rect.width + self.artist.rect.width
AttributeError: 'NoneType' object has no attribute 'width'