Under Parallels 14 for Mac Home Edition under OS X 10.14, I start up the Control Center, click on the + button, choose Download Ubuntu Linux (or the other two options), click Continue, click Download, the window disappears, another small window appears for milliseconds under the Control Center, too fast to read, and then that's it. Nothing happens. I have 2TB free space on the drive so plenty of room. I already have a Windows 10 virtual machine set up and it works fine. Any ideas?