Ubuntu-MATE 19.10. I am having trouble "starting" a Virtualbox system since I updated Thursday, 10/31. I set up a new Sparky package like before, but when I click the green arrow to "start" and click on the dvd in my drive, instead of starting the set up process it gives me a list of folders starting with "boot" with an option at the bottom to choose all or some three letter options. I tried starting over and selecting the different options but cannot get the set up process to begin. It dies at 0% on a pop up about setting up or something. I am very low tech so hopefully the solution will just tell me what folders and file to click to get it started.