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.
I have the same problem when first time to run react-native run-ios Try Hardware -> Reboot the simulator, and run it again.
react-native run-ios