I am running an Ubuntu Server (12.0.4-beta2; kernel 3.2.0) in VirtualBox (host is Win7) and I want to use shared folders. I've followed the manual to set up vbox guest additions http://www.virtualbox.org/manual/ch04.html#idp5801200 but this error occurs with every startup:
Starting the VirtualBox Guest Additions ...fail! (modprobe vboxguest failed) Starting VirtualBox Guest Addition service VirtualBox Additions module not loaded!
When I try it myself:
$ modprobe vboxguest FATAL: Module vboxguest not found.
Did I do something wrong, what do I need to fix it? Thanks for help.