Here\'s my environment:
➜ AwesomeProject node --version v6.3.0 ➜ AwesomeProject npm --version 3.10.3 ➜ AwesomeProject react-native --version react-native-cli: 1.0.
Ran into the same problem. Hardware
> Restart
fixed it.
This is old question but I understand people run into this even today. Posting what I saw as a solution for me.
I noticed I needed to free-up system resources to be able to open any new simulator instances. I killed few processes, was able to open simulator via Xcode and then via react-native too.
Good luck!
Had a similar problem so I opened it up in Xcode and built the project from there. The issue was that no device was selected. Xcode will tell you that when you try to build.