React Native: Command `run-ios` unrecognized

Question

I have two different ReactNative-Projects:

• a) a project from januar 2016
• b) a complete new react-native project from now (march 20th 2016)

Answer 1

For me, the only thing that worked was to checkout again my repository from zero and run:

npm install -g react-native-cli yarn 
yarn  
git submodule update --init --recursive