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)

nativeContainerInfo,
    transaction,
    context
  ) {
    var markup;
    var checkpoint = transaction.checkpoint();
    try {
      markup = this.performInitialMount(renderedElement, nativeParent, nativeContainerInfo, transaction, context);
    } catch (e) {
      
      transaction.rollback(checkpoint);
      this._instance.unstable_handleError(e);
      if (this._pendingStateQueue) {
        this._instance.state = this._processPendingState(this._instance.props, this._instance.context);
      }
      checkpoint = transaction.checkpoint();
      this._renderedComponent.unmountComponent(true);
      transaction.rollback(checkpoint);
      
      
      markup = this.performInitialMount(renderedElement, nativeParent, nativeContainerInfo, transaction, context);
    }
    return markup;
  },
  performInitialMount: function(renderedElement, nativeParent, nativeContainerInfo, transaction, context) {
    var inst = this._instance;
    if (inst.componentWillMount) {
      if (__DEV__) {
        if (this._debugID !== 0) {
          ReactInstrumentation.debugTool.onBeginLifeCycleTimer(