Connecting the profiler

How do I debug connection to the profiler?

I currently cannot get a connection to a player on Mac OS X, but I don’t know what might be wrong. How do I debug this problem?

I know the machines are on the same network, since I sent the build to the Mac through the network.

I also cannot connect to 64-bit builds on my local machine. 32-bit builds works (connects to profiler) locally.

The host machine is Win 7 64-bit. Unity is 3.5.7

The Mac does not have any firewall on.

Is there anything else I should check?