Appium never gets to instuments

[debug] Responding to client with success: {“status”:0,“value”:{“build”:{“version”:“1.4.16”,“revision”:“ae6877eff263066b26328d457bd285c0cc62430d”},“isShuttingDown”:false},“sessionId”:“e6fa9053-dc62-4bda-9968-304f09100937”}
[debug] App is installed.
[debug] fullReset not requested. No need to install.
[debug] Starting command proxy.

And then it just hangs. The next line should be instruments are starting up: “Instruments socket server started at /tmp/instruments_sock”. Anyone have any ideas?
The Appium version is 1.4.16.