I just got this error only when using iPhone/iPod touch.. You can see it when using Safari with iPhone selected as User-Agent
[Error] Error: 'undefined' is not an object (evaluating 'chosen.default_text')
initOrUpdate@http://..../angular-chosen-localytics/chosen.js:60:40
$render@http://..../angular-chosen-localytics/chosen.js:75:32
https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js:189:12
$digest@https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js:109:81
$apply@https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js:112:180
h@https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js:72:306
w@https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js:77:446
onreadystatechange@https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js:78:376
(anonyme Funktion) (angular.min.js, line 92)
error (logging.js, line 38)
$digest (angular.min.js, line 109)
$apply (angular.min.js, line 112)
h (angular.min.js, line 72)
w (angular.min.js, line 77)
onreadystatechange (angular.min.js, line 78)