When the Automatic Login message came up, followed by the user accounts window, all that was required was to tick the "Users must use CTL, ALT Del to login to the computer" tick box. This would have disabled automatic login.
Once the connector has been installed you can then re-enable the automatic login if required.
This is exactly what was needed on my autologin win 7 media centre machine.
I have not has any issue's installing the connector on any of my machines recently but there certainly plenty of people who have not been so fortunate. There a several threads here that give varies idea's to try. I can only suggest that you have a search
for them.
Dave