I'm unable to add a remote instance using addprocs (or a machine file). This works (without prompt): ssh xxx.xxx.xxx.xxx
This command hangs with no output for the first minute: addprocs(["usern...@xxx.xxx.xxx.xxx"]) Then after one minute, the following message appears: Master process (id 1) could not connect within 60.0 seconds This command works: addprocs(["username@mycurrenthostname"]) Thanks in advance for your help! John