error including dependencies from react native

Popover.js

@@ -11,7 +11,7 @@ var {
   View
 } = React;
 var flattenStyle = require('react-native/Libraries/StyleSheet/flattenStyle');
-var Easing = require('react-native/Libraries/Animation/Animated/Easing');
+var Easing = require('react-native/Libraries/Animated/Easing');
 var noop = () => {};
 
 var {height: SCREEN_HEIGHT, width: SCREEN_WIDTH} = Dimensions.get('window');
@@ -38,6 +38,7 @@ var Popover = React.createClass({
   propTypes: {
     isVisible: PropTypes.bool,
     onClose: PropTypes.func,
+    backdropColor: PropTypes.string
   },
   getInitialState() {
     return {