Loading problem with Perfect Dark

[Fender Ketchup]

I got an annoying problem with my Perfect Dark, and I can't seem to find any solution. Every time I start it up, it loads the training area fine, and then whatever thing I do next, Solo/Simulator, is fine, but whenever I go to load another level or re-load the one I was on, it goes to load it, it still goes, but it doesn't load anything. The music still plays fine, but it hangs on the black load screen. I've looked all over the place for a fix, and have even tried 4-5 different ROMs of it, but it still does that.
Is there some hidden option I haven't seen that fixes this, or are all these ROMs just corrupt, or what?

 

[Fender Ketchup]

Nevermind, I figured it out. It was those damn cheats that did it. Turn 'em off, the game works all hunky-dory.