The costume packs are probably fine. They're probably just a key to unlock them from what's already on the game's files. I can't see the filesize though, as most of those are missing from the database on NPS. But, I'm going to assume they're tiny ~10kb downloads. If that's the case, they won't affect the codes in my experience.Which DLC Audio?I've only DLC for play with ships SideArms,Varth etc... is this the problem,why codes don't work?I must delete this DLC,for solve the problem?
However, there's a "Japanese Audio" and "High Quality Audio" DLC for this game. These probably change the data quite a bit and would ruin codes.
Another issue is that these codes aren't using pointers. I don't know if that game uses DMA or not, but if it does it would need a pointer code.
It's hard to say what the issue is without the game or the code creator, though.