startup disk fails to sync after wiping usb drive

[Removed by request]

The error message from the window is as follows:
```
org.freedesktop.DBus.Python.gi._glib.GError: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/share/usb-creator/usb-creator-helper", line 239, in Format
    block.call_format_sync('dos', GLib.Variant('a{sv}', {}), None)
gi._glib.GError: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error synchronizing after initial wipe: Timed out waiting for object
```

I was trying to overwrite a gentoo minimal install on a flashdrive for the vivid iso.

I used usb-creator to select the image and overwrite the 16gb fat drive, though apparently at first it did not overwrite it (seems to have avoided lilo or part of the files)

Upon clicking "test disk"/"test usb" I found it was using the lilo boot and trying to find the gentoo image (invalid kernel)

I tried to wipe the disk after deleting the partition in gnome-disks. That's where the error comes in, it can't "sync after initial wipe".

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: usb-creator-gtk 0.2.56.2
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: X-Cinnamon
Date: Mon Nov 17 02:56:39 2014
ExecutablePath: /usr/bin/usb-creator-gtk
InstallationDate: Installed on 2014-11-11 (5 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
InterpreterPath: /usr/bin/python3.4
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: usb-creator
UDisksDump: Error: [Errno 2] No such file or directory: 'udisks'
UpgradeStatus: No upgrade log present (probably fresh install)