I've updated my 2015 solution for pset6 Server (which I never got around to submitting) to the 2016 requirements and finally it seems to work (again). I can open the cat images and the php also works, but for some reason it fails the Check50! It passes the server1 check but not the server2 check. I'm not really sure where to go from here. I would really appreciate suggestions for how to put this right. Thanks in advance!