React Native views error on Store changes

I have an app that was working fine until I upgraded React and React-Native.

Now, when state is updated with onChange, I see the following error (even if there is no actual change in state, the Store was just subscribed to an event).

`Unhandled JS Exception: One of the sources for assign has an enumerable key on the prototype chain. This is an edge case that we do not support. This error is a performance optimization and not spec compliant.`

My versions:

```
"alt": "^0.18.4",
"react": "15.0.2",
"react-native": "^0.26.2",
```