# are good! scenario where I had # space on host's / while vbox was running. :-( fixed the space problem, but vbox wouldn't start anymore :-( telling: (1). With this hint: (2) it got fixed. (2) solution: "However Vbox now makes a XXX.xml-prev # file so you can recover your machine." from (2b). (1) problem: Failed to create the VirtualBox COM object. The application will now terminate. Start tag expected, '<' not found. Location: '.../.VirtualBox/VirtualBox.xml', line 1 (0), column 1. /.../vbox-4.1.14/src/VBox/Main/src-server/VirtualBoxImpl.cpp[484] (nsresult VirtualBox::init()). (2b) https://forums.virtualbox.org/viewtopic.php?f=5&t=26097