Why is the Ajax code not posting to pho file? - php

Question

I have a form which I am using to AJAX to submit. I have several forms using the same script all with different names posting to response.php however this particular form will not send.
When I remove my form name it tries to post in the normal way but when it has the correct name as the AJAX file I receive no reponse whatsoever leading me to think it is an error within the AJAX file.
HTML
<tr><Td>
<div class="row box" id="login-box">
<div class="col-md-9 col-md-offset-1">
<div class="panel panel-login">
<div class="panel-body">
<div class="row">
<div class="col-lg-12">
<div id="msg"></div>
<div class="alert alert-danger" role="alert" id="error" style="display: none;">...</div>
<form id="editMarshalTitleDetails-form" name="editMarshalTitleDetails_form" role="form" style="display: block;" method="post">
<div class="form-group">
<br><Br>
<input type="text" name="content" id="content" tabindex="2" class="form-control" value="<?php echo $content2 ?>">
<input type="hidden" name="marshalColumn" value="marshalPackFrontPageTitle">
<input type="hidden" name="userID" value="<?php echo "$userID"?>">
</div>
<div class="col-xs-12 form-group pull-right">
<button type="submit" name="editMarshalTitleDetails-submit" id="editMarshalTitleDetails-submit" tabindex="4" class="form-control btn btn-primary">
<span class="spinner"><i class="icon-spin icon-refresh" id="spinner"></i></span> Edit Title
</button>
</div>
</form>
</div>
</div>
</tr></td>
AJAX
$("#editMarshalTitleDetails-form").validate({
submitHandler: submitForm6
});
function submitForm6() {
var data = $("#editMarshalTitleDetails-form").serialize();
$.ajax({
type : 'POST',
url : 'response.php?action=editMarshalTitleDetails',
data : data,
beforeSend: function(){
$("#error").fadeOut();
$("#editMarshalTitleDetails_button").html('<span class="glyphicon glyphicon-transfer"></span> updating ...');
},
success : function(data){
$("#editMarshalTitleDetails_button").html('<span class="glyphicon glyphicon-transfer"></span> Template Updated');
var a = data.split('|***|');
if(a[1]=="update"){
$('#msg').html(a[0]);
}
}
});
return false;
}