Synergy 1.6.2 on raspberry pi not compatible with v1.4 on Mint Now what?

Why does every distro have a different version of Synergy? This does not work and needs a fix. Synergy 1.6.2 on raspberry pi is not compatible with v 1.4 on Mint Now what?

Mint 17.1 synergy wont work with Mint 17.2 synergy or with Windows synergy. I can't find source, synergy.org down. All my machines have a different version!

Now what?