Sims 3 late night problem with layout

After installing sims 3 late night, I started the game then after loading it says sims 3 late night needs real CD. I tried to use power iso to make layout like a cd, but it says that the layout cnt work.. I would like to know why and how can I download a new sims 3 late night layout..

Please help.. Thanks

Hello,

In order to play, there's no need to Mount anything nor you need a real CD nor you need a layout. (Although I don't understand what you mean by that)
First of all, did you read the instructions here: https://games4theworld.forumotion.com/t1171-must-read-how-to-install-the-sims-3-correctly-must-read and installed Generations?