My latest workaround is to run from the command-line, in a fresh terminal: unset DBUS_SESSION_BUS_ADDRESS sudo usb-creator-gtk --allow-system-internal
This provided a working boot media for me after several repeat runs hitting the bug in this thread. I am using bash shell (Ubuntu's default), so change the unset call if you are running a different shell. I found the variable to unset by running `env | grep -i dbus`. I found this workaround based on the clue from @cppege-david-9ei9ny regarding a segfault log in syslog related to dbus. I found this in my /var/log/syslog: May 10 19:40:03 hostname kernel: [ 9015.534921] usb-creator- gtk[13914]: segfault at 4 ip 00007f2d37ae2820 sp 00007fff9c185c88 error 6 in libdbus-1.so.3.5.8[7f2d37abe000+42000] OS: Ubuntu 12.04 x86_64 with all system updates applied. I'm running a dbus/fluxbox X session and not ubuntu-desktop. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/859539 Title: usb-creator-gtk fails to install bootloader: "System policy prevents installing the bootloader" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/usb-creator/+bug/859539/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs