Help downloading base game!!!! [SOLVED]

Hello everybody. I am new to this whole thing, however I did follow the directions to the T about how to download the base game for Mac. Everything goes great until I create the new .iso in Terminal. It creates it.. however instead of opening the installer it opens a folder with 23 items in it. One of those items is "Sims3 installer." But when I click on that it says, "You can't open the application The SIMS(tm) 3 Install because it may be damaged or incomplete." I have deleted everything and re-downloaded multiple times and double checked to make sure i was doing everything right. BUT NOTHING IS WORKING:( I have been trying for about a week now. Any help please!?

Are you using the disk utility under utility's on your mac after you create the rff file? Cause you have to do that or it will not work.

I'm not creating an rff file? I'm creating an .iso file. and so I'm not sure which step i should go into disk utiliy. Can you be more specific? Sorry, I'm new to this.

//EDIT

oh i got it! thank you so much. I have another question but i'll post it in a new thread.

Admin edit: Problem solved, topic closed.

- ADMIN