usb-creator isn't able to run on kubuntu although it's pre-installed

[FriedChicken]

Binary package hint: usb-creator

usb-crator is installed on Kubuntu although it can'r run:

$ usb-creator
Traceback (most recent call last):
  File "/usr/bin/usb-creator", line 21, in <module>
    from usbcreator.gtk_frontend import GtkFrontend
  File "/usr/lib/python2.6/dist-packages/usbcreator/gtk_frontend.py", line 25, in <module>
    import gnomevfs
ImportError: No module named gnomevfs
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/apport_python_hook.py", line 93, in apport_excepthook
    os.O_WRONLY|os.O_CREAT|os.O_EXCL), 'w')
OSError: [Errno 13] Permission denied: '/var/crash/_usr_bin_usb-creator.1000.crash'

Original exception was:
Traceback (most recent call last):
  File "/usr/bin/usb-creator", line 21, in <module>
    from usbcreator.gtk_frontend import GtkFrontend
  File "/usr/lib/python2.6/dist-packages/usbcreator/gtk_frontend.py", line 25, in <module>
    import gnomevfs
ImportError: No module named gnomevfs