I got an email from Great Planes on Dec 12th asking me to run directx diagnostic tool and save the results and email it to them. I did, but have not heard back from them.

I discovered that I had not added RealFlight to the inernet access control on my Norton firewall. Took care of that. I have only tried multiplayer once since then, and everything worked fine. Don't know if that was the problem or not. I had tried disabling the firewall, and that did not help. I'll have to try it some more to see if that took care of the problem.

Eric