Steam Servertravel in BP (4.10) Server is not taking clients

This is the log of two instances of the game. (this time I couldn’t test on steam but the log seems to show a problem)

both logs of the servertravel as attachment.
link text

[note:] you can see at 51.41, there’s a jump to 52.22. It’s the time I’ve waited for the client to connect… until I intentionally closed the server by returning to the menu (on the serverclient). There’s no log between this time.

I found this in particular…
[2015.12.02-05.51.41:079][618]LogOnline:Warning: NULL: Can’t start an online session (Game) in state InProgress "
This might be the problem, but I don’t know what to do.

Thank you