Ah, thank you. Turns out, I copied the files directly into the game data folder, rather than copying the "server" and "client" folders. I have no idea why I did that. I have fixed it, and now I can access the window. Thanks. It is now working, almost. It syncs the game, and the vessels. But only as inactive vessels though. I seem to have a second problem. The client does not seem to want to leave the tracking station view and go into the active vessel map view. Flying a ship on my server game, the client is still in tracking station view. And it only updates the ship I'm flying occasionally and as an inactive vessel. Is it supposed to switch automatically? Or do I have to click something in the client? I've tried clicking the fly button and double clicking on the vessel, but that just loads the client back into the tracking station view. Again, any help you can give will be appreciated.