But from what you said, I am gathering you got the error saying that your client.dll is different from that of the server.. that means the server and the client are on different versions. Did you install 1.1? Properly? If yes, try again.
your trying to install the server side of esf 1.1. You have to wait for the client to be released. Everyone needs to calm there hormones and wait for tonight/tomorrow when the CLIENT will be released. Then you can join up and play. The links on the web page are only for servers just like the esf team has been telling us in the forums for the past week or so.
Ok from the people posting and saying that this release is bad its making it sound like this may not be just a dedicated server download... So if I'm wrong I'm sorry and I'm not wetting myself and jumping on my good computer to download it and see for myself.