No disc found/Disk authentication.

Back again!
Soo.. After uninstalling all of my game and ep's, I installed the base game, having still had the iso. files on the computer. Got all the way through the installation, through the video and screen thing of the sims, Got to picking a town, and it said 'No game disk, please insert'
A couple of days later, I installed the Ambitions ep, got all the way through, updated the patch on the game, and then it said 'Disc Authentication required'
Have I missed something out?

My game is mounted on Daemon tools lite.

Have you applied all new cracks from the ultimate fix?

Hello,

Next time, please keep all your problem regarding the same game in one topic, that make things a lot easier for us, thank you!

Now, please re-do these steps to fix your problem: https://games4theworld.forumotion.com/t1171-must-read-how-to-install-the-sims-3-correctly

Good luck and please let us know the result!