undefined is not an object (evaluating NativeModules.SegmentedControlManager.ComponentHeight

[jessepollak]

I accidentally ran npm install react-native inside of the React app folder. Since then, I've been getting the above error and can't figure out how to solve the issue.

Any ideas?

[wim82]

Somehow i've hit the same issue. But by restarting the packager.. after doing some updates.

[wim82]

More info: it happened after setting "latest" as the version for react-native. When i set it to 0.4.1 everything is fine again.

[esauter5]

I got this issue as well. It happened after I pulled the latest from master to my fork and then tried using that local version of react-native in a react-native project.

[jessepollak]

Downgrading to 0.4.1 fixed it for me as well.

[brentvatne]

Does this happen for all of you if you clone the repo and run the UIExplorer app?

[brentvatne]

Tested this on master in UIExplorer and it works fine. Make sure you have all of these files included in your Libraries/React.xcodeproj

react-native/React/Views/RCTSegmentedControl.h
react-native/React/Views/RCTSegmentedControl.m 
react-native/React/Views/RCTSegmentedControlManager.h
react-native/React/Views/RCTSegmentedControlManager.m

[jessepollak]

Tried upgrading to 0.4.4 and the issue persisted. Checked if I had those files and I didn't. Looked at my Podfile.lock and it had React at 0.4.1. Changed my Podfile from pod 'React' to pod 'React', '~> 0.4.4' and it worked. I guess it's not surprising that we need to keep the Pod and JS in sync, sorry about the trouble. Hope this helps someone else!