OSX 10.7 works as server, but not as client

I am running Synergy 1.4.15 on Windows 7 as the server, and the same version on OSX 10.7 as the client and I am getting a connection timeout on the client side (the Windows server side runs fine). If I switch the server to OSX and client to Windows 7, a connection is established and everything works fine. I opened the firewall on the PC to allow synergys.exe, and opened port 24800 as well. The mac has no firewall.

Any ideas on how to get the original configuration working? Thank you.