virtualbox.org

I have twice installed Mint12KDE 64-bit on win7 64-bit host in VirtualBox 4.1.16. After installing guest additions I have attempted to set up shared folders. In going to add myself to the vboxsf group (using Users and Groups in gnome-system-tools) I find that the vboxsf group has not been created and so I cannot mount shared folders. I have installed other versions of Mint (Gnome) before and have not encountered this problem. I have not yet tried installing in a Linux host. The vboxadditions_4.1.16_78094 virtual disk is shown as mounted and USB sticks mount so I know that the guest additions are operating.

Perhaps this problem is unique to the KDE version. Any suggestions.

Thanks

vboxadditions_4.1.16_78094 virtual disk is shown as mounted and USB sticks mount so I know that the guest additions are operating.

Just because it shows as mounted does not mean they are installed.
You can look in /var/log and see if there is a vboxadd-install.log and you can use the (host+N) keyboard shortcut to open the session information to see if they are listed as functional.

Thanks, Perryg. Guest additions were indeed not installed. I ran the autorun script and all is well. I was accustomed to the autorun script running when I mounted the guest additions, which did not happen in this case.