Can't connect to VPN via PPTP on Lite

[bfb]

I have moved this to here as previously I mistakenly put it in a thread marked 'Solved'

I am having a problem connecting to VPN by PPTP.
I have a dual boot with Windows7 and the same details (password /user-id /address) work on Windows but not on Lite.
They also work on another computer which has Xubuntu on it.
Is there anything in Lite which could explain this failure to connect?
I wondered if I should re-install anything, but it is a new installation 2 days ago...
I am on a ethernet connection and on a  PC not Wifi from a Laptop.