Fixing Additional Guest in Virtualbox ( case lubuntu and trisquel )

 

 

Lubuntu 

Windows 10 64bit running Lubuntu 14.04 in a Virtual Box.
My bidirectional copy-paste was working fine until i did some header updates. Doing the following fixed it for me.
sudo apt-get install virtualbox-guest-dkms

Trisquel

Just
sudo apt-get update 
sudo apt-get install dkms