1.Open software manager and searched for network-manager-pptp. According to Software manager the application was installed so I removed it
2.Searced for pptp-linux. Acording to Software Manager the application was installed so I removed it.
4.Once Mint was up and running again opened Software Manager.
5.Searched for network-manager-pptp and installed it.
6.Searched for pptp-linux and installed it.
8.Error was gone.
Some other suggestion by other users/posts:
1.Remove check box for "Available to all users"
Code: Select all
sudo apt-get update