I'm on 10.9.4, trying to connect to Macs on my LAN via WiFi. The Macs I'm trying to connect to are running a variety of versions, from 10.6.8 to 10.9.4. We're all connected by an HP ProCurve 1410 Gigabit switch, which is in turn connected to an Airport Extreme. The other computers have no trouble accessing each other. They all appear properly under "Shared" in my Finder windows. I can click on them, but no shares are listed, and I just see the options to "Share Screen..." and "Connect As...". Both of those buttons do nothing. I can, however, successfully connect to all of these Macs by manually punching "afp://computername.local" into the "Go > Connect to Server" dialog. (And in fact, for most of the machines, my authentication credentials are memorized, and Conect to Server doesn't prompt me. This means I shouldn't even need to click "Connect As..." in the finder window; the shares should just show up). Any ideas, or troubleshooting steps I could take?