Hopefully this will be a simple question for someone but it's beyond me.
Recently I started connecting to the internet via a 3G Broadband Modem that plugs into my USB. When I connect to the internet this way, I cannot open VPN Client--I get "Error 51: Unable to connect to the VPN Subsystem." The error box says "Please make sure you have at least one active network interface that has an IP address." But I do have an active IP address so I don't know why the VPN client can't see it.
When I connect to the internet via a wireless internet connection at work, I have no problem using VPN client.
How can I resolve this?