Cannot Share host directory with VirtualBox Guest Mint 16 64 bit

I confirm your solution. I'm using a debian 7 amd64 guest on a windows 7 64-bits. I updated virtualbox from 4.3.8 to 4.3.10. The following symlink: /sbin/mount.vboxsf points to /usr/lib/VBoxGuestAdditions/mount.vboxsf whereas the real path to mount.vboxsf is: /usr/lib/x86_64-linux-gnu/VBoxGuestAdditions/mount.vboxsf.

This issue seems to be fixed in virtualbox subversion repository. Thus, it should be fixed in next version.

I had the same problem. and the solution of the topic starter almost worked for me, but in Lubuntu 13 instead of

ln /usr/lib/x86_64-linux-gnu/VBoxGuestAdditions/mount.vboxsf

I used

ln -s /opt/VBoxGuestAdditions-4.3.10/lib/VBoxGuestAdditions/mount.vboxsf