Ring failure, cannot invite players

[olepi]

I have been having a lot of trouble inviting players to my Ring Scenario. Autoinvite does not seem to work reliably. Sometimes people get in, and other times they tell me that it just returns them to the Terminal, I never see them inside the scenario.

Is the Ring disabled for new players? Or is there some other thing that can cause this? I have all options set on, and autoinvite, but it seems random who gets in and who is locked out.