I had the same problem and it was solved by putting the references and includes in that order:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.1/jquery-ui.min.js"></script>
<link href="http://code.jquery.com/ui/1.10.3/themes/redmond/jquery-ui.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>
var datePicker = angular.module('app', []);_x000D_
_x000D_
datePicker.directive('jqdatepicker', function () {_x000D_
return {_x000D_
restrict: 'A',_x000D_
require: 'ngModel',_x000D_
link: function (scope, element, attrs, ngModelCtrl) {_x000D_
element.datepicker({_x000D_
dateFormat: 'dd/mm/yy',_x000D_
onSelect: function (date) {_x000D_
scope.date = date;_x000D_
scope.$apply();_x000D_
}_x000D_
});_x000D_
}_x000D_
};_x000D_
});
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>_x000D_
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.1/jquery-ui.min.js"></script>_x000D_
<link href="http://code.jquery.com/ui/1.10.3/themes/redmond/jquery-ui.css" rel="stylesheet"/>_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.min.js"></script>_x000D_
_x000D_
<body ng-app="app">_x000D_
<input type="text" ng-model="date" jqdatepicker />_x000D_
<br/>_x000D_
{{ date }}_x000D_
</body>
_x000D_