Crystalis game genie code crashing

[slothman]

I have the game Crystalis.
I can play it normally but when I try a certain Game Genie code it crashes.
Specificly the code STAEGA; it is used to get the warrior ring early.

The cheats say to first avoid talking to anyone.
Then use the warp cheat, both controlers are required for that one, to go to the second town.
Once there talk to the right person and she will give you the flight spell.
You then warp to the castle town, I believe Goa, and talk to the right person there.
That is where the problem occurs.
When I talk to him, or anyone else for that matter it just freezes up.
The cheat site also says that you should talk to a nearby person if it doesn't work the first time but fails as well.
I played before this way but I can't figure out how to do it again.

[MottZilla]

You need to add Compare values to your code. When you have a 6 Digit code it patches ALL rom banks. What is happening is this address is also code and thus the game crashes. If you set the compare value for the code it won't. The problem is you need to know the original value that you are changing, as that is the Compare Value. There's 256 possible combinations for that. But that is what you need to do. That or figure out precisely how you are supposed to use their version of the code.