Realistic 15

[Aesmade]

Hello.
I've been trying to do realistic 15 but, apparently, there's something that doesn't work. At some part you have to fool http://www.hackthissite.org/missions/re ... *****h.php to log you in as an admin (you can find out how at http://www.hackthissite.org/articles/read/793, I'm not posting it here not to spoil it for anyone). That method doesn't work, while I could set it up on my computer and it'd work fine. I believe it has something to do with the **r*****y *r****e***l, as the script dies silently if it can't open the file, which seems to be the case. Could someone please look into it?
Thanks in advance.