Tried to use liveusb-creator on f20 to make bootable USB from an f21 BETA ISO. It would not boot, instead claiming that there was no OS to find. Attempted multiple times. No errors when creating / writing USB image. Would not boot the system. unetbootin worked first time and USB booted the live BETA f21 image on the first try.
FWIW, Liveusb-creator on F21 BETA overwrote the unetbootin contents with F21 BETA-4.iso contents to successfully create a bootable USB drive from which F21 installs can be done.
Also on F21, I tried to wipe out the USB stick with dd, followed by using fdisk to make a new partition table and mkfs to make a new filesystem. Generated Bug 1166650 - [abrt] liveusb-creator: connection.py:651:call_blocking:DBusException when resetting the MBR, but after removing and reinserting the USB stick liveusb creator successfully created a boot / install stick that successfully installed F21.
liveusb-creator-3.13.1-1.el7 has been submitted as an update for Fedora EPEL 7. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.1-1.el7
liveusb-creator-3.13.1-1.el6 has been submitted as an update for Fedora EPEL 6. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.1-1.el6
liveusb-creator-3.13.1-1.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.1-1.fc19
liveusb-creator-3.13.1-1.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.1-1.fc21
liveusb-creator-3.13.1-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.1-1.fc20
Package liveusb-creator-3.13.1-1.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing liveusb-creator-3.13.1-1.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-15869/liveusb-creator-3.13.1-1.fc21 then log in and leave karma (feedback).
liveusb-creator-3.13.1-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
liveusb-creator-3.13.2-1.el6 has been submitted as an update for Fedora EPEL 6. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.2-1.el6
liveusb-creator-3.13.2-1.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.2-1.fc20
liveusb-creator-3.13.2-1.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.2-1.fc19
liveusb-creator-3.13.2-1.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/liveusb-creator-3.13.2-1.fc21
liveusb-creator-3.13.2-1.el6 has been pushed to the Fedora EPEL 6 stable repository. If problems still persist, please make note of it in this bug report.
liveusb-creator-3.13.2-1.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
liveusb-creator-3.13.2-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
liveusb-creator-3.13.2-1.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.