Retesting, installing ubuntu-minimal was insufficient to launch usb-creator. After installing ubuntu-desktop, usb-creator launched correctly. As a result, I'm certain this is caused by a missing dependency (although I've no idea which).
Retesting, installing ubuntu-minimal was insufficient to launch usb-creator. After installing ubuntu-desktop, usb-creator launched correctly. As a result, I'm certain this is caused by a missing dependency (although I've no idea which).