Python exception when attempting to write to full device

Hi,

I formatted a device directly with mkfs.vfat (mkfs.vfat -I /dev/sdc) and usb-creator was happy to try to write to that, but it then failed with:
[17:15:51] Source CD: /home/lool/isos/ubuntu/cdimage/daily-live/current/jaunty-desktop-i386.iso
[17:15:51] Destination disk: /dev/sdc
[17:15:51] Persistence size: 1432109056 MB
[17:15:52] Traceback (most recent call last):
[17:15:52] File "/usr/lib/python2.5/site-packages/usbcreator/gtk_frontend.py", line 476, in install
[17:15:52] self.backend.install_bootloader()
[17:15:52] File "/usr/lib/python2.5/site-packages/usbcreator/backend.py", line 457, in install_bootloader
[17:15:52] num = re.match('.*([0-9]+)$', tmp).groups()[0]
[17:15:52] AttributeError: 'NoneType' object has no attribute 'groups'

The fix to avoid the exception and usb-creator hanging seems simple enough, changing:
        num = re.match('.*([0-9]+)$', tmp).groups()[0]
to:
        match = re.match('.*([0-9]+)$', tmp)
        num = None
        if match:
            num = match.groups()[0]

is enough to properly get a popup that partition number detection failed; of course it would be better to be able to proceed, but there's probably a reason why it's not allowed.

Cheers