Iris Action

Hey nerds, why doesn't this code work?
http://pastie.org/private/29v95lljikryiiehtdpoq

I'm trying to extract images from a game pack file. It worked fine on the trial/demo version of the game, but fails on the full version of the game [ https://thepiratebay.se/torrent/7512447/ ]

I really don't understand.

>>23
Lots of ciphers use xor with plaintext as their final step. Unless you found that 64KB block directly embedded in the file I would say it's probably a keystream generated from a much more concise description.

>>24
I'm not downloading 600M+ to solve someone else's problem.