Comment 53 for bug 859539

Same thing on 14.04.2. Upon entering admin user password the script fails with the error message, 'Failed to install boot loader' and quits. In fact, it's getting even worse as on top of it the script now fails to erase the USB stick as well with the error message:

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('vfat', GLib.Variant('a{sv}', {'label': GLib.Variant('s', '')}), None)
gi._glib.GError: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error synchronizing after initial wipe: Timed out waiting for object

and from that point on the erasing takes forever. Not only that but when I finally close the USB Stick creator window, I am left with the USB stick labelled with the chosen distribution name, and appropriate files appear to be copied over. This is very confusing, given the instructions on official Ubuntu site claim the process of making the bootable stick is straightforward and is easy.