Back|Track 5 64-bit KDE in VirtualBox – Failed to load module “vboxvideo”

When trying to run ‘startx’ with Back|Track 5 64-bit KDE iso running in VirtualBox I would get the following error – “Failed to load module ‘vboxvideo'”.  I had a heck of a time searching for solutions and ultimately gave up and just ran the 32-bit.  Today, however, I finally ran into a solution!  Simply remove the icon-cache and plasma cache files from /root/.kde/cache-root/ directory.    After you reboot, once BT5 is installed, remove the same files again, but this time from the /root/.kde/cache-bt/ directory.  In order to get VirtualBox Additions you’ll need to install the following packages:

source-linux-source

source-linux-headers

Run “prepare-kernel-sources” and then the VB additions install script.

 

Thanks goes out to leandrotami for posting this solution here.