I have a Magento store, using ebizmarts SagePay module with "Tokenized Payments" enabled. 

This all works fine, until you try to checkout using a stored card/token. When clicking "Place Order" using onepagecheckout it says "Submitting order information" but then nothing happens afterwards.

I'm running SagePay in Test mode.

[edit]
Inspecting the ajax request, there is no content returned, only headers:

```
Request URL:http://test.domain.com/sgps/payment/onepageSaveOrder/?SID=84aa1c8883aca9c11e07f3f0734ec414
Request Method:POST
Status Code:200 OK
Request Headersview source
Accept:text/javascript, text/html, application/xml, text/xml, */*
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-GB,en-US;q=0.8,en;q=0.6
Cache-Control:no-cache
Connection:keep-alive
Content-Length:97
Content-type:application/x-www-form-urlencoded; charset=UTF-8
Cookie:PHPSESSID=84aa1c8883aca9c11e07f3f0734ec414; __atuvc=2%7C39%2C0%7C40%2C0%7C41%2C0%7C42%2C25%7C43; frontend=84aa1c8883aca9c11e07f3f0734ec414; adminhtml=e9035349d4a4869caf122a6f4cfca251; pettabs=1
Host:test.domain.com
Origin:http://test.domain.com
Pragma:no-cache
Referer:http://test.domain.com/checkout/onepage/
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36
X-Prototype-Version:1.7
X-Requested-With:XMLHttpRequest
Query String Parametersview sourceview URL encoded
SID:84aa1c8883aca9c11e07f3f0734ec414
Form Dataview sourceview URL encoded
payment[method]:sagepayserver
payment[sagepay_token_cc_id]:1
payment[remembertoken]:1
Response Headersview source
Cache-Control:no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Connection:Keep-Alive
Content-Type:text/html
Date:Thu, 24 Oct 2013 10:22:45 GMT
Expires:Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive:timeout=5, max=100
Pragma:no-cache
Server:Apache/2.2.25 (Unix) mod_ssl/2.2.25 OpenSSL/1.0.0-fips mod_bwlimited/1.4
Set-Cookie:frontend=84aa1c8883aca9c11e07f3f0734ec414; expires=Thu, 24-Oct-2013 11:22:47 GMT; path=/; domain=test.domain.com; HttpOnly
Set-Cookie:frontend=84aa1c8883aca9c11e07f3f0734ec414; expires=Thu, 24-Oct-2013 11:22:47 GMT; path=/; domain=test.domain.com; httponly
Transfer-Encoding:chunked
X-Powered-By:PHP/5.4.19

```