Failed to lookup the process ID of com.facebook.UIExplorer after successful launch.

[despairblue]

I'm unable to start the UIExplorer in the simulator:

1. clone repo
2. checkout 0.5-stable
3. npm install
4. run project from xcode

It open the app and crashes, all xcode says is:

Failed to lookup the process ID of com.facebook.UIExplorer after successful launch. Perhaps it crashed after launch.
No such process

[despairblue]

Nevermind, the iOS Simulator was unable to start any app. Restarting the simulator fixed it.