on my old computer I had the disk late night and then then then I played it so then that computer broke then I got an laptop then I downloaded the sims 3 then all my expansion packs and it wasn't in thier is it because it was in a bundle pack
@ebezzy_6 I take it you registered Late Night at some point? (If not, you can still do so now, provided you can find the code that came with the disc; it would be the same one you used to install the first time around.) If LN didn't download automatically, you can force it to do so manually. Click on the Sims 3 icon in your game library, then select More > Expansion Packs, scroll to Late Night, and click Download.
If the button for Late Night says Buy Now instead of Download, it might be a problem with Origin. You can try clearing Origin's cache, and if that doesn't work, you can uninstall Origin "the hard way" and reinstall it. This wouldn't affect your TS3 install.
If these steps don't help, you'll need to contact EA customer support to ask somene to look into your account, as well as what might have happened to your code. It might be helpful if you could provide photos of the disc, its case, and the insert with the code printed on it, as proof of ownership.