[lch]

Yes, you can cancel it afterwards, but it will still create the game directory first.

Another thing, regarding the current patch: At the moment, the game errors out as soon as a client receives a *.trn file with a newer version than it has itself from the server, or if a server receives a *.2h file with a newer version than it has itself from a client. This leads to what we all know as "omg, don't connect to my server when you have updated your game, or you will crash it!". Since the protocol to authenticate a nation and store/retrieve game data from a network server hasn't changed at all, apparently, since the error only fires upon inspection of the version tag inside the files, I'd recommend to make the error appear in-game for clients, like suggested above, and to let the server just refuse to host the turn (or crash) if a newer version *.2h file is present, but accept the files before that without any problems at all.