Me and my friends started a new playthrough of ATM3 a few days ago and today i updated the server and we all updated our packs. Now we tried to join on it again and we can`t join. We all just get a disconnect and the only thing i can see in the Server log is "lost connection: Handshake complete review log file for details." Anything that could help would be appreciated.
latest.log

theres an error in the JVM args that include a part that makes no connections possible

-Dfml.debugNetworkHandshake=true 

If you remove that part from settings.cfg and re-launch server it should work like normal after that -- the next serverfiles to go out will have this removed from the settingscfg as well