Eventually I was able to get it to work.
After several failed tries, the drive was not visible in nautilus, but was still visible in usb-creator. This was not the case in previous attempts. I select sdb1, rather than sdb and it worked.
Eventually I was able to get it to work.
After several failed tries, the drive was not visible in nautilus, but was still visible in usb-creator. This was not the case in previous attempts. I select sdb1, rather than sdb and it worked.