This was an only solution for debugging Ionic apps for me.

emulate.sh

#!/bin/bash
# Manually emulate ionic/cordova application
# Miroslav Masat 2014 

echo "Emulating..."
cd ./platforms/ios/build/emulator
var=$(pwd)

ios-sim launch "$var"/*.app

Cool, this works great, now how do i change device type, changing that doesnt reload the app, what changes are required in the script for it to open in multiple device types?

Thanks

It's work for me, too. Really solved my emulate failed problem.

Thanks

It's works really well. Thanks so much.

Yeap, for me too. Thanks a lot. 😄

Why this did not work for me, it showed:

Emulating...
Session could not be started: Error Domain=DTiPhoneSimulatorErrorDomain Code=2 "Simulator session timed out." UserInfo=0x7fcf80408180 {NSLocalizedDescription=Simulator session timed out.}

I tried sudo.

Same error as @Chener.
Session could not be started: Error Domain=DTiPhoneSimulatorErrorDomain Code=2 "Simulator session timed out." UserInfo=0x7ff8c8c75ab0 {NSLocalizedDescription=Simulator session timed out.}

iOS sim version 8.1 (550.3)
Update: I was able to solve my problem. It was a permission error. I'd created an ionic project using sudo and cause an issue with the files that the simulator was trying to execute (check last response at http://forum.ionicframework.com/t/simulator-session-timed-out-when-ran-ionic-emulate-ios/11437/4). Hope it helps

ionic/cordova emulate ios gets nothing on the simulator, but this tips works !

thank you ......

Thanks, this worked like a charm :)

Thank you very much indeed .! That works for me as well.

Worked, Thanks!