Compiz module encountered an error while loading

[Kazushige GOTOH]

Distribution: LinuxMint 12 lisa
Application: Ubuntu Tweak 0.7.0-0~bzr1707+20120313~oneiric1
Desktop:ubuntu

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/main.py", line 433, in _load_module
    page = module()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/tweaks/compiz.py", line 375, in __init__
    self.create_interface()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/tweaks/compiz.py", line 379, in create_interface
    hbox.pack_start(self.create_edge_setting(), True, False, 0)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/tweaks/compiz.py", line 439, in create_edge_setting
    pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(system_wallpaper, 160, 100)
  File "/usr/lib/python2.7/dist-packages/gi/types.py", line 67, in constructor
    return info.invoke(cls, *args, **kwargs)
GError: Failed to open file '/usr/share/ubuntu-tweak/pixmaps/splash.png': No such file or directory