I'm currently trying to create a music mod for L4D2, but the issue is, every time I attempt to test it, the game crashes. However, if I don't do snd_rebuildaudiocache, the game won't crash, but the mod simply won't work and will emit an extremely eargrating sound instead.
I don't know why it's not working for me now. I've always been able to do music mods with no problem whatsoever, but now I can't even anymore for some reason.
I also verified the cache of my game, but all that does is make everything default.