Yeah, those errors are due to attempting to remove a non-existant (at the time) TUN/TAP interface in some shell file under /etc/, I tracked it down but didn't get around to trying to fix it up (the shell file seems to be different that some of the other vpnc installs I have around).

After you've received the "dbus connect" message, back out of the window and try navigating to/pinging an intranet resource and see if it is indeed working. You might be pleasantly surprised