Got a bit of a problem here:
First off, I'm a PAL user. I downloaded the PAL keys and put them into the program directory. Then I ran Cartographer on the level "The Silent Cartographer". My first problem was that the FTP (cache editing) wouldn't work. It connected and everything but it starts scanning the X drive and crashes (which is strange because all my Halo temp files are in my Y drive).
I then decided to transfer the map files myself. Then there was another problem, in my Y directory there are 2 large (200MB +) map files. cache000.map and cache001.map. Both files register as "The Silent Cartographer" when I open them in Cartographer.
First I edited cache000.map and applied the "2x and 10x on all weapons" effect. Saved the map file and transfered it back to the Xbox (replacing the old one obviously).
I loaded up "The Silent Cartographer" and nothing. There was no change at all to the weapons. So I tried adding more effects (biped etc) but nothing still.
Then I tried everything again using the cache001.map file (which also registered as "The Silent Cartographer") but still nothing.
When I transfer the .map files back, and open them with Cartographer, the effects I turned on are registered (selected effects are purple), so obviously it has edited the map successfully.
Any ideas?