Failed to create the VirtualBox COM object.
The application will now terminate.


Could not load the settings file '/home/bharadwaj/.VirtualBox/VirtualBox.xml'.
Element '{http://www.innotek.de/VirtualBox-settings}SystemProperties', attribute 'defaultHardDiskFolder': [facet 'pattern'] The value '' is not accepted by the pattern '.+'.
Element '{http://www.innotek.de/VirtualBox-settings}SystemProperties', attribute 'defaultHardDiskFolder': '' is not a valid value of the atomic type '{http://www.innotek.de/VirtualBox-settings}TLocalFile'.


Result Code:
VBOX_E_XML_ERROR (0x80BB000A)
Component:
VirtualBox
Interface:
IVirtualBox {339abca2-f47a-4302-87f5-7bc324e6bbde}

Look at your settings file '/home/bharadwaj/.VirtualBox/VirtualBox.xml'.
The messages you posted suggest you have empty string ('') as you 'defaultHardDiskFolder'.