id summary reporter owner description type status component version resolution keywords cc guest host 8801 only printable Serial-Number allowed for the USB-filter BjoernC Hi, when i want to make an permanent filter for an USB-Device, which has none-printable characters, the whole VM will crash at the next startup. The failure which is shown, said that in line X a wrong value has been readed. For a workaround, the serial-number could be deleted and the VM will start. The USB-device was an ST-Link from STMicroelectronics. defect reopened USB VirtualBox 4.0.6 Windows Linux