I've posted this on game section but it seems the devs haven't paid attention to it.
this occurs specially on steam and those with X-Trap protection. the game itself does not allow multiple instances. overriding them or bypassing this game protection with 3rd party software constitutes as cheat and could result to the player being banned. As I understand, each work station is treated like or becomes a "separate computer" computer running on it's own. please correct me if I am wrong. though my set up can ran 4 workstations without lag on a LAN, i am more concern with the on line game.
another thing, i cannot change the ip addresses of the workstations as the selection remains inaccessible.
I answered you in section games :
Your problem is the game detect another instance of its own. That why it complains.
remember, aster activate a new session, it doesn't isolate programs.
For such thing, you have to use a software that run program in a sandbox.
I know only sanboxies which work well : I use it to stream 2 differents steam session to client pc.
With sanboxies, you'll avoid such situation because process is isolated and don't take care of another instance on system.
