try taking off some of your mods. maybe you have some files that are over the size limit. some files also take some time to patch like certain menu mods
the texture hacks and what not are used by the file patch code so you need to make sure that it is on if you want the B+ codes just get them from their web site
if you are going to patch music i would recommend using wii-scrubber and put them onto the iso so that you dont break your SD card Drive
if it was a fitzelda.pac file (no thats not a typo) then you just need to put it in the same folder as zelda that file is used for all of zelda's costumes so the wings will go on every costume you have for her