Hmm... Why haven't I heard any reports on this yet? If there's a freezing glitch, it is likely due to a flaw in the code. The File Patch code was originally designed to be a efficient replacement for .iso hacking, so I still want to be able to cover all the fields that .iso hacking is currently capable of.
Even if it's irrelevant to the rest of Brawl hacking, it's still good to maintain functionally sound codes. I'll look into it and see what's the problem.
Here's another bug, whenever codes like With Anyone - Basic Brawl are applied, no textures show in the game as it interferes with the SD loader.
Meh... I've always had problems with the CSS. Even when someone made a perfect one, it still gave me problems. They probably interfere with the SD loader.
Actually, I just did a quick test... it's not the mu_menumain.pac that crashes it, it's the info.pac that does. And the mu_menumain had no visible effect I could find...
I believe mu_mainmenu changes the song titles in the my music menu.
Info, I believe changes the song names in-game (When the stage loads up, the title of the music changes).