d.setclass is not a function in ngMessages module - angularjs

Question

In one of my angularjs pages, I am using ngMessages module for form validation. While loading that page I am getting folowing error in console.
"angular.js:9400TypeError: d.setClass is not a function
at render (angular-messages.js:413)"
No idea why. Any help would be appreciated.
here is the HTML
<div class="extranet-content">
<div class="container-list">
<form name="personalForm" ng-submit="personalForm.$valid && saveUsers()" novalidate>
<div class="list-header" ng-show="all_users.length > 0">
<div class="row">
<div class="col-xs-1"></div>
<div class="col-xs-1">
<h3>
Id
</h3>
</div>
<div class="col-xs-3">
<h3>
Name
</h3>
</div>
<div class="col-xs-3">
Login
</div>
<div class="col-xs-2">
Sign
</div>
<div class="col-xs-2">
password
</div>
<div class="col-xs-12">
<div class="border"></div>
</div>
</div>
</div>
<div class="list-content" ng-class="{ 'noHeader' : !all_users.length }">
<div class="row" ng-show="saveErrors.length > 0" ng-repeat="error in saveErrors track by $index">
<div class="col-xs-12">
</div>
<div class="col-xs-12"></div>
</div>
<div class="row clearfix"
ng-repeat-start="user in all_users = (users | filter: searchUser) | orderBy : predicate:reverse track by $index"
ng-class="{ 'marginTop' : $first}">
<div class="col-xs-1">
</div>
<div class="col-xs-1"></div>
<div class="col-xs-3">
</div>
<div class="col-xs-3">
<input type="text" name="txtLogin" id="txtLogin_{{$index}}" ng-model="user.Login">
</div>
<div class="col-xs-2">
<ng-form name="signForm">
<input maxlength="7" type="text" name="txtSign" id="txtSign_{{$index}}" ng-model="user.Sign"
required>
<span ng-messages="listFormSubmitted && signForm.txtSign.$error" role="alert" class="error">
<span ng-message="required">required</span>
</span>
</ng-form>
</div>
<div class="col-xs-2"></div>
</div>
<div class="row group" ng-repeat-end>
<div class="col-xs-12" ng-if="!$last">
<div class="borderBottom"></div>
</div>
</div>
</div>
</form>
</div>
</div>