I was wondering: Do you mean the downloads that WERE working stopped working? And if so, in what way? Are they no longer showing up in the game, freezing when you use them, etc.?
Or do you mean that recently you've acquired more downloads and they are not showing up but the other ones you downloaded in the past still work?
I was just wondering, because if you don't have the ES, it might be that the old downloads you installed were for the original game and work fine, but the newer ones generally require that you have ES for them to work properly, so that could be the problem.