it shows that GameServerCS is already running and it appear because you run it again... dont run it twice.
Run the GameServer and GameServerCs. dont run it twice.
Did you check your GameServer.exe shortcut is in the right location target and your GameServerCS?
Please check you have the correct ports and you're really running GS_CS. From the picture it seems to me that you're running gameserver on port 55901 and not GS_CS. I recommend to check whether they really run the correct file.