Error !!!warning!!! invalid StartGame request, slot 0 already used

000000.001| r3dNetwork: Creating client
000000.145| IP: 23.92.86.8
000000.148| Connecting to master server at 127.0.0.1:34000
000000.148| r3dNetwork: connecting to 127.0.0.1:34000
000000.148| waiting: connecting, 20.0 sec left
000000.177| r3dNetwork: external ip: 127.0.0.1:62821
000000.177| Supervisor: Connected to master as peer 0
000000.177| waiting: wait for register, 10.0 sec left
000000.209| registered, id: 1
000000.209| LogUploader is disabled
000005.427| StartGame c7000003aa3431 slot:0, users:50, id:00010100, creatorID:0
000005.429| CreateProcess: "WZ_GameServer.exe" "65792 34010 0" "2 50 0 199 1" "127.0.0.1" "RVZJTFo=" "0"
000035.973| StartGame c7000003aa344f slot:1, users:50, id:00010201, creatorID:0
000035.974| CreateProcess: "WZ_GameServer.exe" "66049 34011 0" "2 50 0 199 1" "127.0.0.1" "RVZJTFo=" "0"
000066.583| !!!warning!!! invalid StartGame request, slot 0 already used
000066.584| StartGame c7000003aa346e slot:0, users:50, id:00010300, creatorID:0
000066.584| CreateProcess: "WZ_GameServer.exe" "66304 34010 0" "2 50 0 199 1" "127.0.0.1" "RVZJTFo=" "0"
000076.774| Control-c ...
000076.774| terminating game [00010300]
000076.774| !!!! unable to terminate game, err: 5
000076.774| terminating game [00010201]
000076.774| !!!! unable to terminate game, err: 5




Help ?

Whats the problem?
You can clearly see that it tries to start no.3 gameserver into the same slot that is already used by no.1 gameserver.

Change masterserver config.