dan casebeer wrote:Document is empty
Location: '/Users/Library/VirtualBox/VirtualBox.xml', line 1 (0), column 1.
That file is obviously corrupted. If you go to that location
[1], you'll see a 0-bytes file. In that same folder, chances are you're going to find a file named "
VirtualBox.xml-prev". Delete the "
VirtualBox.xml" file (the 0-bytes one) and rename the "
VirtualBox.xml-prev" to "
VirtualBox.xml".
If there is no "
VirtualBox.xml-prev", or if it's also a 0-bytes file, then don't worry, it's still fixable. Just delete both of these files, they will be re-created when VirtualBox runs again. You simply would have lost any VirtualBox preferences and registered VMs that you might have had. Not the VMs themselves, the list of the VMs. You need to re-register your VMs, by either double-clicking on the .vbox file of every VM that you have, or go to the menu "Machine" » "Add" and navigate to the .vbox file of each of your existing VMs. Your VMs are located (by default) in "
/Users/<username>/VirtualBox VMs".
Also, please read (and consider voting) about this in ticket
#10851: VM config file lost after host power off.
[1]: One thing that I noticed... There should be no "
/Users/Library" folder, only a "
/Users/<username>/Library" one. Did you try to obfuscate things by deleting your username from the path?