I'm trying to get past the locked door with the keypad. I'm playing on normal difficulty & have solved the riddle, yet the door will not open.
I got "8634" as an answer. Through irritation I checked a couple different walkthrough's, and they also presented "8634" as the code for the normal difficulty setting.
Am I doing something wrong; perhaps I'm overlooking a detail?
Or is this really a glitch?
EDIT: Extra information; I am on the PS2 version.
I've put in the code for all three difficulties.
Don't tell me I have to start over...

EDIT 2: This is killing me. All of my googling has yielded 0 results for anybody else experiencing anything like this.
EDIT 3: I still need help. Please... anyone?
Any insight will help. "I've never heard of that" will do.