Scrapy authenticated crawl

I have been trying to use scrapy to crawl the pages of WackoPicko and have been stuck at this page, http://localhost/pictures/view.php?picid=3, where there is supposedly a comment box below.

I have tried using just a single cookiejar to make sure my authenticated session is passed through to all the links once I've logged in, and have tweaked around with most settings including don_redirect meta.

DEBUG: Sending cookies to: <GET http://ift.tt/1MWEIic;
Cookie: PHPSESSID=4kohgvdbloritctck7ih13pir0
DEBUG: Redirecting (303) to <GET http://ift.tt/1STpidY; from <GET http://ift.tt/1MWEIic;

and I will not get the comment form from view.php. Any help is appreciated. Thanks