Eu encontrei um erro que não consigo depurar.

form-field.html

<div class='row form-group' ng-form="{{field}}" ng-class="{ 'has-error': {{field}}.$dirty && {{field}}.$invalid }">
    <label class='col-sm-2 control-label'> {{ field | labelCase }} <span ng-if='required'>*</span></label>
    <div class='col-sm-6' ng-switch='required'>

        <input ng-switch-when='true' ng-model='record[field][0]' type='{{record[field][1]}}' class='form-control' required ng-change='update()' ng-blur='blurUpdate()' />

        <div class='input-group' ng-switch-default>
            <input ng-model='record[field][0]' type='{{record[field][1]}}' class='form-control' ng-change='update()' ng-blur='blurUpdate()' />
            <span class='input-group-btn'>
                <button class='btn btn-default' ng-click='remove(field)'><span class='glyphicon glyphicon-remove-circle'></span></button> 
            </span>
        </div>
    </div>

    <div class='col-sm-4 has-error' ng-show='{{field}}.$dirty && {{field}}.$invalid' ng-messages='{{field}}.$error'>
        <p class='control-label' ng-message='required'> {{ field | labelCase }} is required. </p>
        <p class='control-label' ng-repeat='(k, v) in types' ng-message='{{k}}'> {{ field | labelCase }} {{v[1]}}</p>
    </div>
</div>

new.html

<h2> New Contact </h2>

<form name='newContact' novalidate class='form-horizontal'>
    <form-field record='contact' field='firstName' live='false' required='true'></form-field>



 <div class='row form-group'>
        <div class='col-sm-offset-2'>
            <button class='btn btn-primary' ng-click='save()'> Create Contact </button>
        </div>
    </div>
</form>

Estou recebendo o seguinte erro:

No navegador:

Erro: [$ parse: sintaxe]http://errors.angularjs.org/1.4.1/$ parse / sintaxe? p0 =% 7B & p1 =% 20key inválida & p2 = 2 & p3 =% 7B% 7Bfield% 7D% 7D.% 24error & p4 =% 7Bfield% 7D% 7D.% 24error

No site angular:

Erro: $ parse: sintaxe Erro de sintaxe Erro de sintaxe: chave inválida do token '{' na coluna 2 da expressão [{{field}}. $ Error] iniciando em [{field}}. $ Error].

Alguém sabe o porquê? Obrigado!