Same problem here, but I got it working formating the Pendrive with FAT16, using Disk Utility (in System / Administration), before opening USB creator.
-- USB Startup Disk Creator does nothing when trying to format a disk https://bugs.launchpad.net/bugs/457737 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs