Can't establish direct connection for sync

I followed the instructions in the video tutorial. However, when I open the “Incoming connections…” on my Macbook Air, nothing appears, despite the fact that my iMac is on the same network and Devonthink is open. Is there something else I need to do? It doesn’t say so in the video—unless I missed something.

See my reply to your Ticket.

I’m having the same problem. I was able to direct sync between my two Macs at home, but cannot sync my Mac Air with my office desktop Mac. All are running Mavericks.