I tryed connect ETpro servers and then coming this text:
ERROR: Protocol Mismatch Between Client and Server
The server you attempted to join is running an incompatible version of the game.
You or the server may be running older versions of the game. Press the auto-update button if it appears on the Main Menu screen.
Any ideas how I can play ETpro? Do I need download something about ETpro before? Please someone tell me.