Hello,

After updating to React 15.0.1, we are getting the following error:

```
Uncaught TypeError: Cannot read property 'addEventListener' of null
```

![image](https://cloud.githubusercontent.com/assets/4996164/14602577/5bb4e9f2-0571-11e6-9aa1-98de49f50d76.png)

}
    if (inst.componentWillUpdate) {
      if (__DEV__) {
        if (this._debugID !== 0) {
          ReactInstrumentation.debugTool.onBeginLifeCycleTimer(
            this._debugID,
            'componentWillUpdate'
          );
        }
      }
      inst.componentWillUpdate(nextProps, nextState, nextContext);
      if (__DEV__) {
        if (this._debugID !== 0) {
          ReactInstrumentation.debugTool.onEndLifeCycleTimer(
            this._debugID,
            'componentWillUpdate'
          );
        }
      }
    }
    this._currentElement = nextElement;
    this._context = unmaskedContext;
    inst.props = nextProps;
    inst.state = nextState;
    inst.context = nextContext;
    this._updateRenderedComponent(transaction, unmaskedContext);
    if (hasComponentDidUpdate) {
      if (__DEV__) {
        transaction.getReactMountReady().enqueue(
          invokeComponentDidUpdateWithTimer.bind(this, prevProps, prevState, prevContext),