-I download the Server and the Client from this link http://godarklight.info.tm/dmp/ and I pick the ones on the left side, under development build. I also get the Updater. -I put the Server folder on my desktop along with the Updater. I run the updater. It says my server is up to date. -I put DarkMultiPlayer folder into Gamedata folder in the KSP directory. I put the updater next to ksp.exe and run it. It says my client is up to date. -I turn on KSP and the menu is there. I add a server that has players on it from the server list here http://godarklight.info.tm/dmp-serverlist/ by putting the port number in the port box and putting the address in the address box. I then port forward the port on both TCP and UDP and check it to make sure it is open. It is. -Handshake is received, sync with kerbals is done, sync with vessles is done, then I get the error message "Unhandled error while syncing!" -This is what happens every time I try to connect to any server, including my own. I don't know what the error means so it is hard to find a way to fix it. @PhoenixTheSage - I am glad that the server is working for you. Did you do anything different than me to get it working?