DDR Universe 3 -- Outfits glitch?

[ArashiNK]

So I've got DDRUniv3, and like a good 360 owner I'm trying to milk every game for every gamerscore point possible. There's an achievement for "Buy all male outfits in Quest Mode." I was up to 219/240, and at that point, something weird happened. It listed Old Rocker D and Old Rocker F about three times each, then listed a bunch of stuff that was listed as "sold out", including Old Rocker D and Old Rocker F. As an experiment I bought all three Old Rocker Ds and Old Rocker Fs from the top of the menu, and they counted.

So now I've gotten to 225/240, but every time I go to the store, it's all Old Rocker D and Old Rocker F, and all of them are "sold out." Am I missing something? Do I have to do something to cause the other 15 outfits to become available? Is the game just bugged and you can't?

Thanks!
_________________

"After the Dance Dance Revolution, we have the Dance Dance Reactionary Purge." --NM