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

In my case, it was an issue with the package.json file. I deleted a section during a test. I recover a previous file with the deleted section and everything was working again.