Do you mean the .dbc and .ebc files? Those are the things from your launcher. You put them in the DCCache folder, not the downloads. Only sims3packs go there.
I did that, it worked but I wanted to started over, so I redownloaded sims3packs , only what I wanted.
Try this, and see if this helps. It should be as simple as putting the .dbc (your downloaded sims3packs) and .edc (ea stuff sims3packs) back in the DCCache folder.