Today I see that my "Configure VPN..." part is greyed out and I have been using several PPTP VPN connections so far and today suddenly this seems to be inactive.
I did the changes in the network manager policy, changes which are mentioned in: gray button for saving "editing VPN connection" in Ubuntu 12.04
I also tried:
sudo apt-get install network-manager-pptp sudo network-manager restart
But the "Configure VPN..." is still greyed out so I cannot configure my existing VPNs.
I have Ubuntu 12.04 LTS. If I upgrade to 14.04, will it work again?