Sims 3 Seasons: No disc found; please insert Seasons disc

So, everything was installed. I clicked on the game to load it, the launcher pops up... nothing on the main screen of it. I click the play button, and it provides me with the error of:

NO GAME DISC FOUND! PLEASE INSERT THE SIMS 3 SEASONS GAME DISC BEFORE PROCEEDING.

I have installed and uninstalled the game, used the patches, and nothing has corrected this. Can someone give me some further insight of what to do to resolve this issue?

Merci.

Hello,

Please re-do step 3 and 4 to fix that error: https://games4theworld.forumotion.com/t1171-must-read-how-to-install-the-sims-3-correctly
Read VERY carefully!

Can anybody help me.
I have downloaded the Sims 3 following all the instructions from this website.
I downloaded a few expansion packs;
- Sims 3 Showtime
- Sims 3 Seasons
- Sims 3 Supernatural

I did EXACTLY everything, putting everything to the right folder and everything.
But every time I run the Sims 3 game, this error pops up. 
"no game disc found! please insert the Sims 3 Seasons game disc before proceeding."

When I ran the Sims 3 Fixing thing that some of you recommended, this error popped up:
"unable to start game
service initialization failed (0x0175dcbb)"
Please help, I really love the Sims..

Hi there! Please create a new thread as this one is dated 3 years ago. Most likely someone will not see it. @iiBobbles