The Departures endpoint has started to return an error just today. This is the error thrown:

HEADERS
Cache-Control: no-cache
Connection: keep-alive
Content-Length: 231
Content-Type: application/json;charset=utf-8
Date: Tue, 26 Nov 2013 11:28:50 GMT
Server: Apache-Coyote/1.1
RESPONSE
Invalid JSON Object: SimpleXMLElement::__construct(): Entity: line 1: parser error : StartTag: invalid element name on line 45 in file /var/www/irdata/sites/data/htdocs/custom/packages/NMBS/Liveboard.class.php.

It throws the error even using it from the Test Endpoint button in Mashape documentation