YES

i want rn 0.49, but error with this, why?

YES
Environment:
OS: macOS Sierra 10.12.6
Node: 6.10.3
Yarn: 0.21.3
npm: 5.5.1
Watchman: 4.7.0
Xcode: Xcode 9.1 Build version 9B55
Android Studio: 2.3 AI-162.3934792
Packages: (wanted => installed)
react: ^16.1.1 => 16.1.1
react-native: 0.49.0 => 0.49.0
You’d get this error if you’re not running the same version of JS as the native code. I’d recommend deleting node modules, clearing derived data, resetting simulator, basically clear all the caches, make sure you have the same version of TN everywhere, then rebuild since this isn’t a bug with RN.
thank you, clean and run, is ok,
I had to run watchman watch-del-all && react-native start --reset-cache and use the versions documented at https://github.com/react-community/create-react-native-app/blob/master/VERSIONS.md Issue should be closed.
Having the same problem here.
"react": "16.0.0",
"react-native": "0.50.1",
Tried killing and restarting the packager,npm install.
Also run watchman watch-del-all && react-native start --reset-cache
But the error is still there
Is there a solution? I am getting the error:
TypeError undefined is not an object evaluating _reactNative.nativeModules.UIManager.RCTVideo.Constants)
I am getting the error:

Facing similar issue when upgrading my version
@wanghuajian620 They just moved out the PropTypes from React core. You have to require separate package to use it, https://www.npmjs.com/package/prop-types
Thanks for posting this! It looks like you may not be using the latest version of React Native, v0.53.0, released on January 2018. Can you make sure this issue can still be reproduced in the latest version?
I am going to close this, but please feel free to open a new issue if you are able to confirm that this is still a problem in v0.53.0 or newer.
i am getting error

do try building, react-native run-android /ios and check for any errors and then restart package manager. It solved the error for me. I got errors when I have run react-native run-android
Most helpful comment
You’d get this error if you’re not running the same version of JS as the native code. I’d recommend deleting node modules, clearing derived data, resetting simulator, basically clear all the caches, make sure you have the same version of TN everywhere, then rebuild since this isn’t a bug with RN.