Sims 3 Disc authentication failure from MY mounted iso

Hello,

I should preface this by saying that I legally purchased my base game and all expansion packs. The .iso files in question were made by me, from my own game disks as back ups. They aren't torrented or pirated in any way. I've been searching the internet for hours and everything I've read in forums has at least one person making the (rude) assumption that anyone mounting an image file to play a game is playing a stolen game. I am not. I'm trying to set up a solution for my young daughter to play the game I purchased for the two of us without having the disc destroyed or lost when she goes to her mother's house. Thus far I have been mounting the latest (in order of release) expansion pack iso using daemon tools into an emulated cd drive, and my game loads up to the point after the expansion pack loading screen. Afterwhich I get a disc authentication failure. Which to me seems strange as the iso file was made of the disk used to install the game. I've run from the emulated disc, from the shortcut, and from the file. They all get the same error. 

I can't send the disk with her, it won't come back. I don't feel it is right to purchase another copy via origin download when I've already paid for one is a real solution. I also don't think stealing a cracked copy via torrent is a moral solution either. Any other solutions would be much appreciated.

I am running on a 64 bit win 7 system. The latest expantion in my library is seasons.

it could just be as simple as this the emulation software is conflicting with the sims...i don't know if this will help i'm just throwing out there does your daughter have a lap top ? if the games are registered in your origin  you can download the digital versions of your games from origin to the laptop or pc as the case maybe, i'll assume for now it's your origin account so download origin then log in with email and password associated with the account

right click the game icon-download

edit to add the email and pasword are the same as the sims 3 account

I was not aware that after registering your games they  automatically go to your origin account for download and that you can play directly from there without the disk. My daughter goes back to her mothers this evening, so just in time! Thanks for the tips! 

welcomes 🙂