Q After reading about VirtualBox (www.virtualbox.org) in your magazine I’ve been using it for years to run old software in Windows XP. I’m currently on version 6.0 but keep getting urged to upgrade to 7.1. I eventually gave in to the nagging, but when I tried to install 7.1 I was met with a warning message about Python and ‘missing dependencies’. I’m reluctant to proceed in case I end up breaking my current VirtualBox setup. I don’t recall such problems when upgrading VirtualBox in the past. I'm running Windows 10 (and will be one of those reckless souls who will continue to do so). Can you help?