virtualbox.org

I have selected the Guest Additions in storage however when I restart and try to apply, the dialog reads: Unable to mount the CD/DVD image on the machine... with a link pointing to the guest additions iso. Also, could not mount the media drive. I can either cancel or force unmount.

I try sudo apt-get install but nothing updates.

At one point, I saw a message in Joli OS which flashed something about Guest Additions being available, but I can't then find a link.

Any clues? I found some documentation on this but it seemed outdated.