JQuery Ajax Post :500 Internal Server Error
<p>I am trying to perform this AJAX post but for some reason I am getting a server 500 error. </p>

<pre><code>   $.ajax({
            url: '.../PublicAPI.svc/Register',
    type: 'POST',
    dataType: 'json',
    async: false,
    //contentType: 'application/json; charset=utf-8',
    data: '{ "ApiKey": "'+$('#ApiKey').val()+'", "LanguageId": "'+$('#LanguageId').val()+'", "Password": "'+$('#Password').val()+'","Username": "'+$('#Email').val()+'" }',
    success: function( response, textStatus, jqXHR ) {
        console.log('success');
        console.log(response);
    },
    error: function( jqXHR, textStatus, errorThrown ) {
        console.log(jqXHR);
            console.log(textStatus);
        console.log(errorThrown);
    }
}); 
</code></pre>

<p>Can any body help me to find out what is the issue?</p>
