problem installing sims 3 late night [ Edited ]

[thunderthor16]

Hi, I recently got a new computer and I installed the base Sims 3 game and the town stuff expansion pack but when I went to install late night, I would put it into the **bleep** tray but nothing would happen. and if I go to my computer, then click on the disk, it looks like a piece of paper and it goes into the stuff of the **bleep**, not the installation of the game. Any solutions?