Preparing to unpack .../virtualbox-ext-pack_5.0.40-0ubuntu1.16.04.1_all.deb ...
License has already been accepted.
Unpacking virtualbox-ext-pack (5.0.40-0ubuntu1.16.04.1) ...
Setting up virtualbox-ext-pack (5.0.40-0ubuntu1.16.04.1) ...
virtualbox-ext-pack: downloading: http://download.virtualbox.org/virtualbox/5.0.40/Oracle_VM_VirtualBox_Extension_Pack-5.0.40.vbox-extpack
The file will be downloaded into /usr/share/virtualbox-ext-pack
dpkg: error processing package virtualbox-ext-pack (--configure):
 subprocess installed post-installation script returned error exit status 8