I thought I would start clean so I blew away all my VMS and uninstalled parallels by dragging the app to the trash. I then manually went in and deleted the parallels folder in Library and also and prefs. If I try and make a new Windows VM with the arm VHDX file I get to the end and it gives this error. If I use an Ubuntu iso it gives this error. As it stands I can't create any VMs. This is on the Apple DTK mac mini with 11.3 beta.