usb-creator-gtk doesn't close the window upon finishing

[Pedro H. Lorentz G. Amaral]

Running Ubuntu 10.10 and making a Startup Disk (usb-creator-gtk version 0.2.25.3) of Ubuntu 12.04 (both 64 bits) on a 2GB empty pen drive with 256MB of reserved storage chosen.
After being asked for root password a third time, the window get blank after a short while (with just the title "Installing" on top). After waiting for about 10 minutes, as my pen drive wasn't blinking anymore, I tried and removed it successfully with the Safely remove option on Nautilus (version 2.32.0) but the window is still there.

Tried 2 times more and got the same blank window. Seems to be safe to use the pen drive to install Ubuntu, but I am not quite confident. I expected a information message telling me that it was done.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: usb-creator-gtk 0.2.25.3
ProcVersionSignature: Ubuntu 2.6.35-32.67-generic 2.6.35.14
Uname: Linux 2.6.35-32-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue May 1 12:23:12 2012
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: usb-creator