MakerBot forgot their own standard in MakerBot Desktop and now Desktop chokes and dies when it sees a machine name of length 16 bytes. Spec actually allowed a name to be 16 bytes long with no NUL terminator. A NUL terminator was only needed if the length was less than 16 bytes. As of MakerBot Desktop, they changed (broke) things such that if a 16 byte long string with no NUL is encountered, then Desktop cannot connect to the bot over USB.