Stopping VirtualBox kernel modules ...done.
Uninstalling old VirtualBox DKMS kernel modulesrmdir: failed to remove '': No such file or directory
rmdir: failed to remove '': No such file or directory
rmdir: failed to remove '': No such file or directory
 ...done.
Trying to register the VirtualBox kernel modules using DKMS ...done.
Starting VirtualBox kernel modules ...failed!
  (modprobe vboxdrv failed. Please use 'dmesg' to find out why)
Setting up dkms (2.2.0.3-2ubuntu11) ...