Hi Linux users,
To use beta4, please run these commands after installing and before starting the config app:
mkdir -p ~/.config/synergy/
ln -s ~/.config/Symless/Synergy/synergy.conf ~/.config/synergy/synergy.conf
The last line starts the service, and the service log can be found in: /var/log/synergy-service.log
Sorry that we dropped the ball for Linux on this one!