Sims 3 Help, (I've read carefully). [SOLVED]

Hey, I need some Sims 3 help, I recently followed your instructions on how to download the Sims 3 and it worked, well I thought it did until the game gave me this error while trying to play "No game disk found! Please insert The Sims 3 game disk  before playing"
I did everything I was suppose to, although the expansion pack part was not really that clear (I installed it onto my computer, I wasn't sure what I was suppose to do after that? I couldn't even unarchived it. Could this be the problem? And if there is can some one supply me with an expansion pack that Mac can unarchive?)
Other than that I've done everything Admin has told me.  :newfag:

Hello,

I am not quite sure about your problem. Which expansion packs you downloaded and installed? Did yo use Ultimate Fix?

I tried to instal Seasons expansion pack. I mounted the .iso but I think I've found the problem.
When trying to put in the serial for Seasons it won't let me continue. I'll provide a screenshot of this.

Because your serial is wrong?

Herderp, Thanks.
I actually figured this out last night, as I tried a different serial and then herped a major derp as seasons installed.

So, your game works now?Do you need further help?

At the moment it's fine. Thanks though! I'll make sure to return if I get anymore problems.